初中八年级数学上册分式的化简练习题精选17.docx

1、初中八年级数学上册分式的化简练习题精选17 40a2bc320a2bc2 x225x210x253x26xb3b2 6x6b25ab2c 45a2b3c3(2x5y)y x2y8x28xy4(xy)28x28xa5x25a28x28y23(xy)250a3b2c330ab2c2 x216x27x125x210xn5n2 3x3n 20a2b3c35a2b2c(x5y)y xy8x28xy2(xy)28z28za4z24a27x27y22(xy)230a3b2c 15a3bc2 x236x29x183x26xb3b2 3x3b 25a3b330a2b3c(3x4)y xy4x24xy6(xy)2

2、10x210xa3x23a22x22y24(xy)2 40ab3c 15a3bc2 x225x211x307a214ab7b2 9a9b5ab 30abc2(2x6)y2 xy6x26xy10(xy)28x28xb2x22b25x25y25(xy)2 15a2bc245a3b2c2 x216x28x164x28xn4n2 7x7n 25ab2c 50ab3c3(2x4)y2 xy8x28xy6(xy)28y28yb3y23b23x23y25(xy)250a3bc2 45ab3c x2100x215x506a212an6n2 2a2n 5ab340a2bc(x4)y3 x3y26x26xy9(x

3、y)26x26xc4x24c27x27y22(xy)2 40a2b2c 45a2b3c x249x213x422a24ab2b2 5a5b 15ab2c35abc(x6y)y x2y4x24xy5(xy)28z28zc4z24c26x26y22(xy)245ab2c20ab3c x216x210x245m210mn5n2 8m8n 20ab3c45ab3c2(x4y)y3 xy10x210xy6(xy)24x24xa4x24a25x25y23(xy)220a2b3c3 50ab3c3 x29x26x95a210an5n2 9a9n 15abc30ab2c(2x5y)y xy4x24xy5(xy

4、)28z28zb5z25b27x27y23(xy)2 50a2bc 45a3b3c x281x212x276x212xy6y2 6x6y20a2bc45a3b3c(x6)y2 x3y8x28xy4(xy)22x22xc4x24c22x22y22(xy)250ab3c 20a3bc x24x25x64m28mb4b2 10m10b20abc45a2bc3(x4y)y x2y8x28xy5(xy)26x26xc4x24c23x23y22(xy)2 5abc3 15a2b2c x24x28x124x28xb4b2 6x6b25ab 50abc(x5)y2 xy310x210xy4(xy)210x21

5、0xc4x24c23x23y24(xy)2 10a2bc25abc3 x225x27x105x210xb5b2 4x4b15a3b 30a2bc2(3x4)y xy38x28xy10(xy)210z210zc3z23c25x25y23(xy)250a3bc25a2b2c x24x26x83x26xy3y2 7x7y 15a2b250a2b3c(x6y)y xy4x24xy9(xy)22x22xa4x24a22x22y24(xy)220a3b2c45ab2c3 x29x25x66x212xb6b2 5x5b15abc 45a2b3c3(3x6y)y x3y6x26xy10(xy)28z28zc4

6、z24c28x28y25(xy)2 25a3bc 45a2bc x21x23x24x28xy4y2 2x2y 15a2b 40a2bc2(2x5)y x3y310x210xy10(xy)210x210xb5x25b25x25y24(xy)230a2bc225a3b2c x21x25x43m26my3y2 4m4y 25a3bc 30abc3(3x5)y2 x3y8x28xy10(xy)22y22ya2y22a25x25y25(xy)240a2b3c3 15ab3c x29x26x98m216mn8n2 5m5n15a3b 30a3bc2(x6)y x3y22x22xy8(xy)24y24yb3

7、y23b26x26y25(xy)210ab2c310abc x281x214x453x26xy3y2 5x5y5a2bc40a3bc3(3x4y)y2 x2y8x28xy6(xy)28y28yb2y22b22x22y23(xy)245ab3c 20a3b2c2 x24x28x123m26mb3b2 5m5b20abc 40a3bc3(x5)y3 x2y28x28xy9(xy)28z28za2z22a29x29y24(xy)2 45a3b2c3 50ab2c2 x225x29x204x28xn4n2 6x6n 5ab2 50a2bc2(x6y)y x2y2x22xy6(xy)24z24zc5z2

8、5c24x24y25(xy)2 30a2b2c3 25a2b2c2 x281x214x454x28xy4y2 8x8y 5ab 50a2b2c3(3x6)y3 xy28x28xy10(xy)210x210xc2x22c24x24y25(xy)210a2bc20a3b2c3 x21x26x57m214mb7b2 10m10b 20a2b235ab3c(x5)y x3y38x28xy2(xy)210y210yc4y24c22x22y22(xy)215abc 10a3bc x29x28x158m216my8y2 6m6y5a3b350abc(2x5y)y3 x2y310x210xy10(xy)210

9、x210xb4x24b25x25y23(xy)2 30a3bc3 45ab3c x24x27x102a24ay2y2 6a6y5a3b3c 35abc3(x5y)y3 x3y26x26xy2(xy)210z210zb2z22b26x26y24(xy)210ab2c2 30ab3c x249x29x145x210xy5y2 7x7y 20a2bc 40ab2c3(x6)y x2y38x28xy2(xy)26x26xb2x22b25x25y23(xy)2 50abc 10a3bc3 x2100x216x604x28xb4b2 4x4b 10abc 30a3bc3(3x6)y2 x2y22x22xy

10、8(xy)26z26za5z25a29x29y25(xy)25a3b2c35a2b2c x264x210x164a28ab4b2 8a8b25ab2c35ab2c(x5y)y3 xy4x24xy8(xy)24y24yc4y24c27x27y25(xy)240a3b3c2 5a2b3c2 x236x212x365x210xy5y2 10x10y 25a2b 50ab3c2(x4)y3 xy26x26xy8(xy)28y28yb2y22b23x23y23(xy)2 25ab2c340ab3c2 x225x29x202m24my2y2 3m3y10a2b3 50ab2c(2x5)y2 x3y36x2

11、6xy8(xy)22z22za5z25a29x29y24(xy)2 50ab3c 10ab2c x249x211x285a210ab5b2 6a6b 15a3b 40abc(x6)y3 x2y32x22xy10(xy)26x26xc2x22c22x22y23(xy)2 10a2b2c2 15a2b2c3 x281x215x542a24ay2y2 2a2y 15a3b50ab3c(x4y)y3 xy22x22xy9(xy)24y24ya2y22a28x28y25(xy)2 25ab2c340a3bc x281x212x277a214ab7b2 7a7b20ab2 30a3bc(3x6)y x2y

12、2x22xy6(xy)210z210zb3z23b27x27y22(xy)240abc340abc2 x216x28x165x210xy5y2 4x4y5ab330ab3c3(x6)y3 x3y34x24xy2(xy)24y24yb2y22b28x28y23(xy)245ab2c 30a2bc3 x249x212x357m214mb7b2 3m3b25a3b 40ab2c(3x6y)y3 x2y38x28xy10(xy)210y210ya5y25a29x29y23(xy)240a3b3c250abc3 x281x212x272a24an2n2 6a6n 20a2b3c 35a3b2c(x4)y

13、 xy10x210xy2(xy)26z26zc4z24c28x28y24(xy)220abc250ab2c x225x210x257a214ay7y2 5a5y15abc45ab3c(x5y)y x2y6x26xy5(xy)24y24ya5y25a28x28y23(xy)2 35a2bc215a2bc x24x26x85a210ab5b2 8a8b 10ab3c40ab3c3(x6y)y2 x3y26x26xy10(xy)28x28xc3x23c25x25y24(xy)220a3b2c340a3bc x264x212x326x212xy6y2 6x6y25ab245a2b2c(2x4y)y3

14、x3y24x24xy10(xy)210z210za2z22a27x27y24(xy)240abc50abc3 x29x27x124x28xy4y2 7x7y 5ab3c 40abc(2x6y)y x3y26x26xy4(xy)26z26zc5z25c28x28y25(xy)2 50abc45abc3 x21x25x46m212mb6b2 6m6b20a3b2c35a3bc(x6y)y2 xy38x28xy9(xy)22y22yc2y22c24x24y25(xy)240a2bc3 50a2bc3 x24x25x64a28ab4b2 5a5b 5a3bc35ab3c(x4y)y2 xy6x26xy

15、10(xy)26x26xb4x24b22x22y22(xy)2 45abc2 40a2bc x264x214x486m212mn6n2 5m5n 5abc 40a2b2c2(2x6)y2 xy10x210xy7(xy)210z210zb3z23b23x23y24(xy)2 50ab2c 20a3bc x225x29x203a26ab3b2 5a5b10ab2 40abc2(x4)y x2y8x28xy6(xy)24z24za5z25a22x22y24(xy)2 15abc2 5ab3c x264x212x325a210ay5y2 8a8y20ab 30a3b3c(x6)y2 x3y6x26xy

16、7(xy)28x28xc4x24c23x23y24(xy)2 35a2bc5ab3c3 x2100x212x208m216mn8n2 4m4n5ab3c35a3bc(x6)y xy4x24xy10(xy)22x22xa4x24a29x29y25(xy)2 30abc2 40ab2c x2100x216x603x26xn3n2 3x3n 20a2b 35ab2c3(x6)y xy26x26xy9(xy)22x22xa2x22a27x27y23(xy)220a3b3c250abc x2100x215x503a26ab3b2 2a2b 10ab3 35ab2c2(2x5y)y xy210x210xy4(xy)28y28yb5y25b28x28y25(xy)210ab3c 25abc2 x2100x214x408m216my8y2 2m2y 15ab3c45a2bc(x6)y2 x2y2x2