人教版初中八年级数学上册分式的化简练习题精选58.docx

1、人教版初中八年级数学上册分式的化简练习题精选58(3x4y)y xy4x24xy9(xy)210y210ya4y24a22x22y23(xy)245ab2c2 40ab2c x264x212x323a26ab3b2 10a10b20abc40abc3(x5y)y3 xy6x26xy7(xy)28x28xa5x25a25x25y24(xy)215ab3c2 45a3bc x2100x215x508a216an8n2 5a5n15abc35abc2(x5y)y xy32x22xy4(xy)26x26xa5x25a27x27y23(xy)235abc5abc x236x211x308x216xn8n

2、2 5x5n20a3b2 40abc(3x5)y x3y210x210xy7(xy)26x26xb5x25b23x23y22(xy)210ab2c235ab3c x225x29x203m26mb3b2 5m5b5a2b 35ab2c(x5)y x3y310x210xy9(xy)24z24zc4z24c26x26y25(xy)25a3b2c10ab3c3 x225x28x156m212mb6b2 3m3b 20a3b50a2b2c(2x5y)y x2y6x26xy10(xy)210z210zb4z24b29x29y25(xy)225abc3 45a2b2c x249x211x282m24my2y

3、2 3m3y15a3b2c35abc3(3x4)y xy6x26xy7(xy)22y22yb2y22b23x23y25(xy)2 20a2b2c 40a3b3c x264x210x168a216ay8y2 5a5y 10a3b 30ab3c(2x5y)y xy22x22xy3(xy)26z26zb4z24b22x22y25(xy)2 20abc220ab3c x2100x212x205a210ay5y2 2a2y 5a3b3c50abc(3x5)y xy10x210xy8(xy)210z210za5z25a27x27y22(xy)25abc230abc x24x25x63m26mn3n2 10

4、m10n5a3b 35ab2c(3x4y)y3 xy28x28xy10(xy)28x28xc3x23c25x25y23(xy)220abc3 35a3b3c x2100x214x403m26mn3n2 9m9n 5a3b2c40a3b3c2(2x4y)y3 xy26x26xy4(xy)22y22yb3y23b29x29y24(xy)250ab2c 25ab2c2 x24x28x122x24xy2y2 10x10y15ab2c40abc(x5y)y3 xy2x22xy6(xy)26y26ya3y23a27x27y25(xy)2 35a3bc2 15a3b2c2 x24x28x124x28xy4y

5、2 9x9y15a3b235abc2(2x5)y3 x3y210x210xy8(xy)24z24zc3z23c25x25y23(xy)235abc220a3bc2 x24x27x108x216xy8y2 8x8y 25ab2c 35a2b3c(3x5)y x3y6x26xy3(xy)24x24xa3x23a28x28y24(xy)215abc335ab2c2 x29x27x127x214xb7b2 9x9b 5abc30a2b3c3(3x4)y x2y10x210xy8(xy)28z28za3z23a24x24y22(xy)225abc20abc3 x2100x215x503m26mb3b2

6、8m8b15a2b2c 50abc2(3x6y)y x3y4x24xy8(xy)210z210zc4z24c24x24y23(xy)210abc 5abc3 x21x23x26x212xb6b2 8x8b20a2b50a2b2c3(3x5y)y3 x3y4x24xy7(xy)26z26zb3z23b22x22y25(xy)2 15a3bc310a3bc x225x210x256x212xy6y2 4x4y 15a3b350a2b3c2(2x4y)y xy8x28xy3(xy)24z24zb5z25b25x25y25(xy)245ab2c 15abc x281x214x453x26xb3b2 1

7、0x10b 15a2b245ab3c(2x4)y xy36x26xy4(xy)26z26zc5z25c26x26y23(xy)2 40abc3 20a2bc x2100x213x307x214xn7n2 3x3n15a3b2 40ab3c(2x6)y2 xy2x22xy6(xy)24y24ya2y22a25x25y22(xy)240ab3c335abc3 x281x215x544a28an4n2 2a2n5a3bc40a2bc(2x5y)y2 xy6x26xy5(xy)22z22zc5z25c22x22y22(xy)2 40a3b2c10a3b3c3 x236x212x365m210mn5n2

8、 4m4n10ab3 30a3b3c2(x4)y xy36x26xy3(xy)24z24zb3z23b25x25y25(xy)2 40abc245a2b3c x281x214x456a212ay6y2 6a6y20ab3 45ab2c(2x6y)y xy2x22xy7(xy)22y22yb5y25b26x26y22(xy)2 10ab3c 5abc2 x21x26x52m24my2y2 5m5y 10a3bc 35ab3c(3x6)y xy22x22xy4(xy)210y210ya3y23a24x24y22(xy)245a3bc 40a2b2c x24x24x45a210ab5b2 6a6b2

9、0a3b 30a2b2c(x4y)y xy22x22xy10(xy)210y210yc4y24c25x25y23(xy)2 50abc15a3b2c2 x24x25x63x26xy3y2 3x3y20a2b2 40abc2(x5y)y3 xy210x210xy4(xy)22y22yb4y24b29x29y22(xy)2 35a2b3c15abc x21x26x54m28mb4b2 8m8b 10a2bc 40abc(x6y)y x3y4x24xy2(xy)22x22xa5x25a27x27y22(xy)2 5ab2c310a2b2c3 x21x25x44m28mn4n2 6m6n25abc45

10、abc(2x6)y2 xy2x22xy6(xy)28z28zc3z23c23x23y23(xy)240a2bc 30a3b2c3 x2100x213x303a26ay3y2 3a3y 15a2b250a2bc(2x5y)y3 xy38x28xy9(xy)24z24zc4z24c29x29y25(xy)230a2b3c240a3bc2 x281x215x547a214an7n2 8a8n 20ab250a2bc3(3x6)y2 x3y2x22xy2(xy)210y210ya5y25a24x24y23(xy)250a2b3c2 45ab2c x21x24x38m216mb8b2 2m2b25ab4

11、5ab2c2(3x5y)y2 x3y2x22xy5(xy)22y22yb2y22b26x26y23(xy)2 45ab2c245ab2c x216x28x162a24an2n2 6a6n 10a2b235a2bc(2x6y)y x2y310x210xy8(xy)24y24yc2y22c22x22y23(xy)2 20abc30a3bc x2100x214x405x210xb5b2 5x5b 5ab2 35a3b3c(x6y)y3 x3y6x26xy7(xy)24x24xc2x22c25x25y24(xy)2 35ab2c5a2b2c x29x26x98m216my8y2 3m3y 10ab34

12、5a3bc2(3x4y)y xy28x28xy10(xy)22z22za4z24a24x24y23(xy)2 50abc 40ab3c x29x26x95m210mn5n2 5m5n 5a3b2c 45ab2c(x4)y x3y8x28xy10(xy)24x24xc4x24c28x28y24(xy)2 25abc15a2bc3 x21x24x38a216ab8b2 9a9b 15abc45a2b3c2(2x5y)y x2y32x22xy3(xy)22x22xa5x25a25x25y24(xy)2 10a2bc330a2b2c x24x25x64a28an4n2 10a10n 10a2b3 35

13、ab3c3(2x5)y2 x2y38x28xy5(xy)24x24xa4x24a22x22y23(xy)2 15ab3c20a3b2c x281x215x543x26xb3b2 4x4b 15ab50a2bc(x6y)y2 x2y10x210xy4(xy)28x28xb2x22b28x28y22(xy)240a2bc45abc x225x27x108x216xy8y2 2x2y5a2b3c 40ab2c3(x5)y xy26x26xy10(xy)24y24ya2y22a24x24y22(xy)240a2b3c215a2bc x24x28x125a210an5n2 3a3n 20a3b40abc

14、3(x6y)y x2y4x24xy4(xy)24z24zb5z25b24x24y24(xy)240ab3c3 35ab3c2 x24x26x88a216an8n2 2a2n 25ab330a3b3c(3x6y)y2 xy36x26xy5(xy)24z24zb2z22b24x24y22(xy)230a2bc35ab3c x249x29x148x216xb8b2 7x7b20a3b2c 45a3b3c(x6y)y2 x2y24x24xy9(xy)210z210zc5z25c28x28y25(xy)2 25ab2c3 45ab3c3 x24x28x124m28mn4n2 9m9n 10a3b235a

15、3b3c2(3x6y)y xy24x24xy9(xy)24x24xb2x22b29x29y25(xy)2 40a2bc20a3bc2 x281x213x365a210an5n2 9a9n10a2b40a2b2c(x4)y2 x3y4x24xy8(xy)24y24ya3y23a25x25y24(xy)2 25abc325abc2 x249x212x355m210mn5n2 5m5n5ab340a3bc3(2x5)y x3y2x22xy10(xy)210z210zb5z25b25x25y22(xy)235a2bc15ab2c x236x212x362a24an2n2 8a8n 25a3b2c 35

16、ab2c3(x5y)y x3y36x26xy5(xy)28x28xb4x24b24x24y25(xy)240abc2 5a2b3c2 x249x212x357x214xn7n2 6x6n5a3b3 50abc(2x4y)y3 xy36x26xy6(xy)28x28xc2x22c26x26y24(xy)2 30a2bc30ab3c x24x27x108a216ab8b2 6a6b5abc 45a3b2c2(2x4y)y xy36x26xy8(xy)24x24xc2x22c24x24y24(xy)2 45abc 30abc3 x216x27x126x212xn6n2 10x10n15a3bc 45a2bc2(2x4)y x3y26x26xy10(xy)210x210xa5x25a23x23y25(xy)235a2b3c15abc x236x2