整式的混合运算专项练习题有答案解析有过程ok.doc

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1、 整式的混合运算专项练习99题有答案12x2y3xy325x2x+1x13xyx+x+yxy；4a+2b2+4ab3ab5 3a23a32a2a5265mn2m+3n+7m7mn7x+22x+1x18x+222x2；92a+3b24aa+3b+1102xy223x2yx3y411x+12+21x12 a32a23；13ab2a2b3c2；14；15 x32x2x+x3x2x2163x234y326x2y3；17xy22yxx+2y1819a+bb+a+a+b22aa+b20；21xx+12x+12x3；222a+3b22a3b2232a2a8a6；242x2+x+x+4x1252ab32+ab

2、43ab2；262a+32a3+a322712ab2abc43a2b3c2abc3282x23x2292m13m2302xx2+3x3x2x+1313aab23ab2323x2x2x+4332x32xyxy 3343x22x+33xx+1=0353x+23x+13x+12362aa+ba+b237x2x7+32x2383x2y23x3y2 39a+22a+1a140a24a24142aab24b+4a3ba2；43x8yxy443x2y35y；45x+y2y2x+y4x2x462x+a22xa2472x236x3x3+2x22x248x2x+2x+1x3492a3b412a3b2 503x12

3、x+36x2516x22+3x2x27x59x2522y23+yy553x+22x+1x154a+bab+a+b2a2a+b55a2a22a35615x2y10xy25xy572x236x3x3+2x2+xx458x+12+21xx25912a36a2+3a3a605x2x+1x161b2a24aab623ab234ab2633a2a6643a3b9a2b221a2b33a2b65x+3x2x22663x+4y3x4y67x+3y2xyy5x+3y683a52a322a32a25； 694xy+x2y2+x+3y3yx703x2y22xy271a2b2+a+2ba2b7273742xy23+3

4、xy42x2y2752x33xy2 76a+3ba2b2ab2772x2y3+3x22x2y378m2n3m4nmn2792a122a+1280x4y+6x3y2x2y33x2y812x3y+12x+3y1822x4x22x+1836a34a2+2a2a842xy2x+yx3y2854x22x3+6x2x2x128687xxy2+2xyyx2y6x2y22x2y88x6x2x227x2892x+y2x3y+4y2x+y90m+2m2+m1m+591x+y2y2x+y8x2x922xy26xy2x+yy+29327a315a2+6a3a94xx+2yx+12+2x95x2y32x3y44xy96

5、a3a3+2a32a23972x+1x+36x2+x1；98xx2y2xyyx2x3y+3x2y992x+y2yy+2x4x2x整式混合运算99题参考答案：12x2y3xy3=4x4y6x3y3=4x7y9；25x2x+1x1，=5x2x21，=5x45x23xyx+x+yxy，=xyx2+x2y2，=xyy2；4a+2b2+4ab3ab，=a2+4ab+4b24b2，=a2+4ab53a23a32a2a52，=3a6a6a2a10，=3a12a12，=2a1265mn2m+3n+7m7mn，=5mn2m+3n7m7mn，=57mn+2+7m+3n，=3n9m2mn；7x+22x+1x1，=x

6、2+4x+4x2+xx+1，=4x+58x+222x2，=x2+4x+44x2，=3x2+4x+4；92a+3b24aa+3b+1，=4a2+12ab+9b24a212ab4a，=9b24a102xy223x2yx3y4，=4x2y43x2yx3y4，=12x4y5x3y4，=12xy11x+12+21x，=x+12+21x，=x2+2x+1+22x，=x2+312a32a23，=a6a6，=a12；13ab2a2b3c2，=a3b5c2，=a6b10c2；14，=93，=23，=8；15x32x2x+x3x2x2，=x6x2x+x3x2x2，=x3x3，=016原式=27x616y6216x

7、6y3=2y3；17原式=xy22yxx+2y，=x2+2xy+y24y2x2，=x2+2xy+y24y2+x2，=2xy3y218=3x2yxy+xy2xy+xyxy，=6x+2y1；19a+bb+a+a+b22aa+b，=a+bab+a+b2a，=020原式=2x3x6y6y29x7y8，=6x7y6y29x7y8，=2x7y89x7y8，=；21原式=x2+x4x26x+2x3，=x2+x4x2+6x2x+3，=3x2+5x+3；22原式=2a+3b+2a3b2a+3b2a+3b，=4a9b，=36ab232a2a8a6，=2a2a2，=a2；242x2+x+x+4x1，=4x2+x2+

8、3x4，=3x252ab32+ab43ab2，=4a2b63a2b6，=a2b6；262a+32a3+a32，=4a29+a26a+9，=5a26a27原式=12a5b6c43a2b3c2a3b3c3=4a3b3c32a3b3c3=228原式=8x6x2=8x4；29原式=6m2+4m3m+2=6m2+m+230原式=2x3+6x23x33x2=5x3+3x2313aab23ab212a2b2，=3a2b29a2b212a2b2，=24a2b232原式=6x3+3x212x； 33原式=2x32xyx3y3 =x7y4343x22x+33xx+1=0，3x26x+93x23x=0，9x=9，x

9、=135原式=9x2+3x+6x+29x26x1=3x1362aa+ba+b2=a+b2aab=a+bab37原式=2x27x+912x+4x2=6x219x+9383x2y23x3y2，=9x4y23x3y2，=3x；39a+22a+1a1，=a2+4a+4a21，=a2+4a+4a2+1，=4a+540原式=a8a2=a6；41原式=a2b6ab2+6ab2=a2b42原式=a2b24ab+4ab=a2b2；43原式=x2xy8xy+8y2=x29xy+8y244原式=27x6y35y=135x6y4；45原式=x2+y2+2xy2xyy24x2x=x24x2x=x246原式=2x+a+2

10、xa2x+a2xa=2x+a+2xa2x+a2x+a=4x2a=8ax；47原式=8x66x612x52x2=2x66x52x2=x4+6x3=6x3x4；48原式=x24x22x3=x24x2+2x+3=2x149原式=8a3b412a3b2，=b250原式=6x2+9x2x36x2=6x2+9x2x36x2=7x3516x22+3x2x27x59x2 =36x43x3+3x3=36x4522y23+yy5=8y6+y6=7y6；53x+22x+1x1=x2+4x+4x2+1=4x+554原式=a2b2+a2+2ab+b22a2ab=ab55a2a22a3=a2a4a3=a6a3=a3；56

11、15x2y10xy25xy=3x2y57原式=8x66x612x56x4x4=2x612x56x4x4=2x212x658原式=x+12+21xx2=x2+2x+1+22xx2=35912a36a2+3a3a=4a22a+1；605x2x+1x1=5x2x21=5x45x261原式=b24ab+4a24a2+4ab=b262原式=27a3b64ab2=108a4b863原式=3a218a2a+12=3a220a+1264化成单项式除以单项式a+3b+7b265原式=x22x+3x6x24x+4=x2+x6x2+4x4=5x10；66原式=9x216y2；67原式=2x2xy+6xy3y25xy

12、3y2=2x26y268原式=3a10a64a6a10=3a164a16=a16；69原式=4xy+x24xy+4y4+9y2x2=4y4+9y270原式=3x2y24x2y2=12x4y4；71原式=a24ab+4b2+a24b2=2a24ab72原式=a24b22ab+4b2=a22ab73原式=10x32x3=8x374原式=8x3y6+6x3y6=2x3y675原式=8x33xy2=24x4y2；76原式=a22ab+3ab6b24a24ab+b2 =a22ab+3ab6b24a2+4abb2=3a2+5ab7b277原式=8x6y3+9x4x2y3=8x6y39x6y3=17x6y3

13、78原式=m10n4m2n2=m8n2；79原式=2a12a+12=16a48a2+1；80原式=x2+2xyy2；81原式=2x3y12x+3y1=4x29y2+6y1822x4x22x+1，=8x3+4x22x；836a34a2+2a2a，=3a22a+1842xy2x+yx3y2，=4x2y2x2+6xy9y2，=3x2+6xy10y285原式=2x+x232x12=2x+x234x24x+1=2x+x234x2+4x1=x24x22x+4x31=3x2+2x486原式=9m2+6mn+n26mnn22m=9m22m=m87原式=x2y2+2x2yx2y2+6x2y32x2y=2x2y+

14、6x2y32x2y=1+3y288原式=x6x2x227x2=x43x4=2x489原式=2x+y2x3y+4y=2x+y2x+y=2x+y290原式=m24+m2+5mm5 =2m2+4m9；91原式=x2+2xy+y22xy+y28x2x=x2+2xy+y22xyy28x2x=x28x2x=x492原式=2xy22x6xy2x+y2+2y=y23y+y2+2y=2y2y93原式=9a25a+2；94原式=x2+2xyx22x1+2x=2xy1；95原式=x4y6x3y44xy=x4y64xy=4xy=；96原式=a3+3+4a6+a6=a6+4a6+a6=6a6972x+1x+36x2+x1=2x2+6x+x+36x26x+6=4x2+x+9；98xx2y2xyyx2x3y+3x2y=x3y2x2yx2y+x3y2+3x2y=2x3y22x2y+3x2y=2x3y2+x2y99原式=2x+y2x+yy4x2x=2x+y2x4x2x=2x2x+y22x=2x+y2