2015数学八年级二次根式练习题.pdf

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1、第1页总 12页2015数学八年级二次根式练习题知识点一：二次根式的概念【知识要点】:二次根式的定义：形如的式子叫二次根式，其中叫被开方数，只有当是一个非负数时，才有意义【典型例题】【例 1】以下各式:1 22211,2)5,3)2,4)4,5)(),6)1,7)2153xaaa，其中是二次根式的是 _填序号举一反三：1、以下各式中，一定是二次根式的是A、a B、10 C、1a D、21a2、在a、2a b、1x、21x、3中是二次根式的个数有_个【例 2】假设式子13x有意义，则x 的取值范围是 来源:学*科*网 Z*X*X*K 举一反三：1、使代数式43xx有意义的x 的取值范围是 A、x

2、3 B、x3 C、x4 D、x3 且 x4 2、使代数式221xx有意义的 x 的取值范围是3、如果代数式mnm1有意义，那么，直角坐标系中点P m，n的位置在A、第一象限B、第二象限C、第三象限D、第四象限【例 3】假设 y=5x+x5+2009，则 x+y=举一反三：1、假设11xx2()xy，则xy的值为A 1 B1 C2 D3 2、假设 x、y 都是实数，且y=4x233x2，求 xy 的值3、当a取什么值时，代数式211a取值最小，并求出这个最小值。第2页总 12页【例 4】已知 a 是5整数部分，b 是5的小数部分，求12ab的值。举一反三：假设3的整数部分是a，小数部分是b，则b

3、a3。假设17的整数部分为x，小数部分为y，求yx12的值.知识点二：二次根式的性质【知识要点】1.非负性：a a()0是一个非负数注意：此性质可作公式记住，后面根式运算中经常用到2.()()aaa20注意：此性质既可正用，也可反用，反用的意义在于，可以把任意一个非负数或非负代数式写成完全平方的形式：aaa()()203.aaa aa a200|()()注意：1字母不一定是正数2能开得尽方的因式移到根号外时，必须用它的算术平方根代替3可移到根号内的因式，必须是非负因式，如果因式的值是负的，应把负号留在根号外 4.公式aaa aa a200|()()与()()aaa20的区别与联系1a2表示求一

4、个数的平方的算术根，a 的范围是一切实数2()a2表示一个数的算术平方根的平方，a 的范围是非负数3a2和()a2的运算结果都是非负的【典型例题】【例 4】假设22340abc，则cba举一反三：1、假设0)1(32nm，则mn的值为。2、已知yx,为实数，且02312yx，则yx的值为A3 B 3 C1 D 1 3、已知直角三角形两边x、y 的长满足 x24652yy0，则第三边长为.文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z

5、5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:

6、CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z

7、5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:

8、CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z

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10、CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z5H1 ZP3F3V3N4M8文档编码:CG9Y2S3A9R9 HE1T5X4Z

11、5H1 ZP3F3V3N4M8第3页总 12页4、假设1ab与24ab互为相反数，则2005_ab。【例 5】化简：21(3)aa的结果为A、42a B、0 C、2a4 D、4 举一反三：1.在实数范围内分解因式:23x=；4244mm=429_,2 22_xxx2.化简：33 133.已知直角三角形的两直角边分别为2和5，则斜边长为【例 6】已知2x,则化简244xx的结果是A、2x B、2xC、2xD、2x举一反三：1、根式2(3)的值是()A-3 B3 或-3 C3 D9 2、已知 a04二次根式的除法法则：两个数的算术平方根的商，等于这两个数的商的算术平方根。ab=aba0，b0注意：

12、乘、除法的运算法则要灵活运用，在实际运算中经常从等式的右边变形至等式的左边，同时还要考虑字母的取值范围，最后把运算结果化成最简二次根式【典型例题】【例 15】化简(1)916 (2)1681 (3)1525 (4)229x y(0,0 yx)(5)12632【例 16】计算 1【例 17】化简：(1)364 (2)22649ba)0,0(ba (3)2964xy)0,0(yx (4)25169xy)0,0(yx【例 18】计算：(1)123 (2)3128 (3)114164648【例 19】能使等式22xxxx成立的的x的取值范围是A、2x B、0 x C、02x D、无解知识点六：二次根式

13、计算二次根式的加减【知识要点】需要先把二次根式化简，然后把被开方数相同的二次根式即同类二次根式的系数相加减，被开方数不变。注意：对于二次根式的加减，关键是合并同类二次根式，通常是先化成最简二次根式，再把同类二次根式合并但在化简二次根式时，二次根式的被开方数应不含分母，不含能开得尽的因数【典型例题】【例 20】计算 11132752 0.53227；212543102024553457；文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1

14、Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:C

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16、Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:C

17、K8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1

18、Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:C

19、K8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1

20、Y8 ZZ2Y1Z1E3P2第8页总 12页311113275348532；4113326327284814723247知识点七：二次根式计算二次根式的混合计算与求值【知识要点】1、确定运算顺序；2、灵活运用运算定律；3、正确使用乘法公式；4、大多数分母有理化要及时；5、在有些简便运算中也许可以约分，不要盲目有理化；【典型习题】【例 21】1、22 (212+418 348)2、673)32272(知识点八：根式比较大小【知识要点】1、根式变形法当0,0ab时，如果ab，则ab；如果ab，则ab。2、平方法当0,0ab时，如果22ab，则ab；如果22ab，则ab。3、分母有理化法通过分母有理

21、化，利用分子的大小来比较。4、分子有理化法通过分子有理化，利用分母的大小来比较。5、倒数法6、媒介传递法适当选择介于两个数之间的媒介值，利用传递性进行比较。7、作差比较法 在对两数比较大小时，经常运用如下性质：0abab；0abab8、求商比较法它运用如下性质：当a0，b0 时，则：1aabb；1aabb【典型例题】【例 22】比较3 5与5 3的大小。例 23】比较231与121的大小。【例 24】比较1514与1413的大小。【例 25】比较76与65的大小。文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1

22、Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:C

23、K8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1

24、Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:C

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26、Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:C

27、K8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1

28、Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2第9页总 12页【例 26】比较73与873的大小二次根式练习题一、选择题1 以下式子一定是二次根式的是A2x Bx C22x D22x2假设13m有意义，则m能取的最小整数值是Am=0 Bm=1 Cm=2 Dm=3 3假设 x0，则xxx2的结果是A0 B 2 C0 或 2 D2 4以下说法错误的选项是(A962aa是最简二次根式 B.4是二次根式C22ba是一个非负数 D.162x的最小值是4 524n是整数，则正整数n的最小值是A.4 B.5 C 6化简6151的结果为A3011

29、B33030 C30330 D11307 把 aa1根号外的因式移入根号内的结果是A、a B、a C、a D、a8.对于所有实数,a b，以下等式总能成立的是 A.2abab B.22abab C.22222abab D.2abab9.对于二次根式29x，以下说法中不正确的选项是A.它是一个非负数 B.它是一个无理数 C.它是最简二次根式 D.它的最小值为3 文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P

30、2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR

31、9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P

32、2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR

33、9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P

34、2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR

35、9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P

36、2第10页总 12页10.以下式子中正确的选项是 A.527 B.22abab C.a xb xabx D.6834322二、填空题11.2)3.0(；2)52(。12化简：计算yxyx_;13计算3393aaaa=。14化简：2211xxx的结果是。15 当 1 x5 时，215_xx。16200020013232_。a 1，则22)1(aa ;三、计算(1)2252412)459(4333232332326 (4)；2196234xxxx(5)274 374 33 51 (6).2222121312137计算：1031.231321211(8)21(2813文档编码:CK8I7Y6Q6G7

37、 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1

38、E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7

39、 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1

40、E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7

41、 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1

42、E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7

43、 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2第11页总 12页(9)251)52(32232(10)13327(11)21()25()3()2(022(12)52453204(528.计算：(1)32)243222731(2)()243)(2aa9.计算：1)2762)(6227(2)(2)32)(6210.计算：(1)235)(235(2)1462)(732(四、解答题1已知：的值。求代数式2,211881xyyxxxy文档编码:

44、CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M

45、1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:

46、CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M

47、1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:

48、CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M

49、1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:

50、CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2文档编码:CK8I7Y6Q6G7 HR9R9S9M1Y8 ZZ2Y1Z1E3P2第12页总 12页2.当 1 x5 时，化简：22211025xxxx2440 xyyy，求xy的值。4.观察以下等式：12)12)(12(12121；23)23)(23(23231；34)34)(34(34341；利用你观察到的规律，化简：113215已知 a、b、c 满足0235)8(2cba求：1a、b、c 的值；2试问以a、b、c 为边能否构成三角形？假设能构