人教版初中八年级数学上册分式的化简练习题精选2Word下载.docx

1、（x5）y4x24xy7（xy）28y28yc5y25c29x29y2 40ab3c3x211x305m210mn5n2 2m2n5a2b30ab2c（2x4）y32x22xy4（xy）28z28za2z22a24x24y25（xy）2 20a3bc 50abc3x210x162m24mb2b2 4m4b15ab2 30a3b2c（3x6）y36（xy）24x24xc4x24c235a3b2c220abc x249x29x145a210ab5b2 8a8b 5ab230abc（2x6）y8x28xy4y24yc15a3b2c50a3b3c x236x210x246x212xn6n2 7x7n2

2、0ab3c40abc6（xy）25z25a2 10abc3 20a2b3c3 x281x215x544a28ay4y2 4a4y5a2bc（x5）y3 x3y10x210xy6x26xc3x23c28x28y25（xy）230ab3c2 10a3b2c3x214x484x28xn4n2 2x2n45a3b2c（x6y）y xy22x22xy2z22za 45a2bc 20abc x24x24x43m26mb3b2 2m2b20a2bc 35a2b3c（x6）y8x28xb3x23b22x22y245ab2c2 20a3b2c34m28mb4b2 6m6b25a2bc（2x4y）y39（xy）2

3、2x22xa2x22a250abc250abcx28x126a212ab6b2 9a9b5a3b350a3b3c3（x5）y x2y28（xy）210x210xb2x22b210a3b3c215a3b3c3 x29x26x9 5x5y25a2b50a2bc（x6y）y6x26xy8z28zb3z23b2 50a3b2cx27x102x24xb2b2 5x5b 20ab250ab3c3（3x5y）y3 x2y10x210xy2z22zc2z22c2 40ab3c5a210an5n2 5a5n15ab 30a3bc4x24xb 30ab2c 15a2b3c3x210x217a214ab7b2 2a

4、2b 10a3b3（x5y）y36z26za30abc3 45abc3x211x302m24mn2n2 45ab2c（3x4）y33x23y250a2b3c50a2bc33m26my3y2 7m7y10a2b 50ab2c3（x5y）y2（xy）210x210xc2x22c230a2bc2x210x162x24xn2n2 6x6n10ab 50a3b3c2z22b2 30a2bc2 10abcx214x453m26mb3b2 8m8b 15a2b2c40ab2c3（2x6y）y3 x3y24z24zb4z24b245abc 5abc x2100x216x607m214mb7b210a3b 30

5、a3bc26x26xy10z210zb5z25b25x25y2 10a3b3c 25a3b2c2x210x256a212an6n2 7a7n5a3b2c 35a3bc2 x3y32z22za 20a2b3cx212x207x214xb7b2 4x4b 25ab2 30a3bc3（x5）y34（xy）26y26ya2y22a2 45ab2c215a2b2cx27x125m210mn5n2 3m3n 25a3b 30abc3（2x4）y34y24ya5y25a220a2b2c 15abc2 x216x26x84a28ab4b2 20ab2c35a2bc22z22zb 35a2b2c50abc33x

6、26xn3n2 50a2bc2（3x6y）y22z22zb15ab2c2x213x308m216my8y2 3m3y 25abc 30abc（3x6）y37（xy）210z210za 15a2bc3 10a3bc 2m2n25ab30ab3c（2x6）y210z210zb30a2b2c2 15abc3x26xb3b2 2x2b20a3b2c 35abc3（2x5y）y34z24za35abcx216x608m216mb8b2 7m7b10a2bc35ab3c3（x4）y36x26xb 30a2bcx212x366m212mb6b2 5m5b25a2b330ab2c3（x6）y310y210ya

7、35ab2c3x212x364m28mn4n2 3m3n20a3bc30a3bc2（x4y）y210（xy）22x22xc45ab2c320ab2c3 40abc38z28zb45a2bcx214x454a28an4n25ab3c40a2bc2（3x4）y9（xy）2 20a2b2c325a3b2cx211x282m24mn2n2 10m10n 5a3b3 45ab3c5x25a245ab3cx27x125x210xb5b2 3x3b 15a2bc（2x5）y220a3b2c325a3b2c3x213x364x28xy4y2 7x7y 45abc（3x6）y26y26yc4y24c2 35a2

8、bcx29x18 4m4n 10a3b245a3bc3（2x6）y26x26xa4x24a250a2b2cx214x40 9x9b 45abc25x210xy5y230a3bc（3x6）y 5a2bc2 50ab3c2x24xy2y240a2bc（x5y）y10y210yc2y22c230a2bc 25ab2cx213x424m28my4y2 2m2y5ab35a2b3c2x22xbx214x40 5a3bc35ab2c6y26yc25ab3cx213x36 10x10b 15a3b210（xy）28x28xc 15ab3c8x216xb8b2 2x2b（x5y）y24y24yb3y23b25a3b2c2 20abc2（x6）y22y22b2 35ab2c 30a2b2c2x26x8 9m9y 20a2b30a2b3c（3x6y）y x2y36x26xa7a214an7n220a3b340abc2（x4y）y15a3bc2x29x202a24ab2b2 5a5b 45a3b2c3（3x6y）y34（