最新(643)整式的混合运算专项练习99题(有答案有过程)ok.doc
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1、Four short words sum up what has lifted most successful individuals above the crowd: a little bit more.-author-date(643)整式的混合运算专项练习99题(有答案有过程)ok整式的混合运算专项练习99题(有答案) 整式的混合运算专项练习99题(有答案)-(1)(2x2y3)(xy)3(2)5x2(x+1)(x1)(3)x(yx)+(x+y)(xy);(4)(a+2b)2+4ab3(ab)(5) 3(a2)3(a3)2(a)2(a5)2(6)(5mn2m+3n)+(7m7mn)(7)
2、(x+2)2(x+1)(x1)(8)(x+2)2(2x)2;(9)(2a+3b)24a(a+3b+1)(10)(2xy2)23x2y(x3y4)(11)(x+1)2+2(1x)(12) (a3)2(a2)3;(13)(a)(b)2a2b3c2;(14);(15) (x3)2x2x+x3(x)2(x2)(16)(3x2)3(4y3)2(6x2y)3;(17)(xy)2(2yx)(x+2y)(18)(19)(a+b)(b+a)+(a+b)22a(a+b)(20);(21)x(x+1)(2x+1)(2x3);(22)(2a+3b)2(2a3b)2(23)2a2a8a6;(24)(2x)(2+x)+(
3、x+4)(x1)(25)(2ab3)2+ab4(3ab2);(26)(2a+3)(2a3)+(a3)2(27)12ab2(abc)4(3a2b3c)2(abc)3(28)(2x2)3(x)2(29)(2m1)(3m2)(30)2x(x2+3x)3x2(x+1)(31)3a(ab2)(3ab)2(32)3x(2x2x+4)(33)2x3(2xy)(xy) 3(34)3(x22x+3)3x(x+1)=0(35)(3x+2)(3x+1)(3x+1)2(36)2a(a+b)(a+b)2(37)x(2x7)+(32x)2(38)(3x2y)2(3x3y2) (39)(a+2)2(a+1)(a1)(40)
4、(a2)4a2(41)(42)a(ab24b)+4a3ba2;(43)(x8y)(xy)(44)(3x2y)3(5y);(45)(x+y)2y(2x+y)4x2x(46)(2x+a)2(2xa)2(47)(2x2)36x3(x3+2x2)(2x2)(48)(x2)(x+2)(x+1)(x3)(49)(2a)3b412a3b2 (50)(3x1)(2x+3)6x2(51)(6x2)2+(3x2)x27x5(9x2)(52)(2y2)3+yy5(53)(x+2)2(x+1)(x1)(54)(a+b)(ab)+(a+b)2a(2a+b)(55)(a)2(a2)2a3(56)(15x2y10xy2)5
5、xy(57)(2x2)36x3(x3+2x2+x)(x)4(58)(x+1)2+2(1x)x2(59)(12a36a2+3a)3a(60)5x2(x+1)(x1)(61)(b2a)24a(ab)(62)(3ab2)3(4ab2)(63)(3a2)(a6)(64)(3a3b9a2b221a2b3)(3a2b)(65)(x+3)(x2)(x2)2(66)(3x+4y)(3x4y)(67)(x+3y)(2xy)y(5x+3y)(68)3(a5)2(a3)2(2a3)2(a2)5; (69)4xy+(x2y)2+(x+3y)(3yx)(70)3x2y2(2xy)2(71)(a2b)2+(a+2b)(a
6、2b)(72)(73)(74)(2xy2)3+(3xy4)(2x2y2)(75)(2x)3(3xy2) (76)(a+3b)(a2b)(2ab)2(77)(2x2y)3+(3x2)2(x2)y3(78)(m2n)3(m4n)(mn)2(79)(2a1)2(2a+1)2(80)(x4y+6x3y2x2y3)(3x2y)(81)(2x3y+1)(2x+3y1)(82)(2x)(4x22x+1)(83)(6a34a2+2a)2a(84)(2xy)(2x+y)(x3y)2(85)(4x22x3+6x)(2x)(2x1)2(86)(87)x(xy2+2xy)y(x2y6x2y2)2x2y(88)x6(x
7、)2(x)227x2(89)(2x+y)(2x3y)+4y(2x+y)(90)(m+2)(m2)+(m1)(m+5)(91)(x+y)2y(2x+y)8x2x(92)(2xy26xy)2x+y(y+2)(93)(27a315a2+6a)(3a)(94)x(x+2y)(x+1)2+2x(95)(x2y3)2(x3y4)(4xy)(96)a3a3+(2a3)2(a2)3(97)(2x+1)(x+3)6(x2+x1);(98)x(x2y2xy)y(x2x3y)+3x2y(99)(2x+y)2y(y+2x)4x2x整式混合运算99题参考答案:(1)(2x2y3)(xy)3=4x4y6x3y3=4x7y
8、9;(2)5x2(x+1)(x1),=5x2(x21),=5x45x2(3)x(yx)+(x+y)(xy),=xyx2+x2y2,=xyy2;(4)(a+2b)2+4ab3(ab),=a2+4ab+4b24b2,=a2+4ab(5)3(a2)3(a3)2(a)2(a5)2,=3a6a6a2a10,=3a12a12,=2a12(6)(5mn2m+3n)+(7m7mn),=5mn2m+3n7m7mn,=(57)mn+(2+7)m+3n,=3n9m2mn;(7)(x+2)2(x+1)(x1),=x2+4x+4x2+xx+1,=4x+5(8)(x+2)2(2x)2,=x2+4x+44x2,=3x2+4
9、x+4;(9)(2a+3b)24a(a+3b+1),=4a2+12ab+9b24a212ab4a,=9b24a(10)(2xy2)23x2y(x3y4),=4x2y43x2y(x3y4),=12x4y5(x3y4),=12xy(11)(x+1)2+2(1x),=(x+1)2+2(1x),=x2+2x+1+22x,=x2+3(12)(a3)2(a2)3,=a6(a6),=a12;(13)(a)(b)2a2b3c2,=(a3b5c)2,=a6b10c2;(14),=(9)3,=23,=8;(15)(x3)2x2x+x3(x)2(x2),=x6x2x+x3x2(x2),=x3x3,=0(16)原式=
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