人教版初中八年级数学上册分式的化简练习题精选64.docx

1、人教版初中八年级数学上册分式的化简练习题精选64(3x4y)y2 xy310x210xy10(xy)26z26zb3z23b28x28y23(xy)2 45a2bc350a3b2c2 x281x213x364m28mn4n2 8m8n15a3bc 50a3b3c(3x6y)y3 xy32x22xy7(xy)28y28ya4y24a25x25y22(xy)250a3b3c 10a3b3c x281x215x544a28ay4y2 8a8y10a2b 50abc(2x6y)y x2y34x24xy4(xy)24y24yc5y25c25x25y24(xy)2 15a2b3c2 25ab2c x236

2、x210x248a216an8n2 10a10n 20ab335a3b3c(3x5y)y xy32x22xy10(xy)22z22zc5z25c26x26y25(xy)2 25abc45a2b3c x264x212x327x214xn7n2 8x8n15ab2 50a2bc(x6)y3 x3y10x210xy6(xy)22y22ya5y25a22x22y23(xy)240abc50a2bc3 x225x211x306a212ab6b2 5a5b20a3b3 30a3b3c2(3x6)y3 x2y24x24xy5(xy)24x24xc3x23c25x25y22(xy)2 20abc2 35abc

3、 x236x28x127m214my7y2 9m9y25abc45a3bc3(x5y)y x2y28x28xy6(xy)26y26ya2y22a23x23y23(xy)2 10a2bc30ab2c x2100x212x202m24mn2n2 2m2n10a3b50abc(3x5)y3 x3y2x22xy9(xy)26x26xa5x25a27x27y23(xy)250abc10a3bc x264x214x485x210xn5n2 8x8n 25a3b2c 50abc(2x6)y xy22x22xy7(xy)210x210xb4x24b25x25y23(xy)2 30a3b3c2 50a2b3c2

4、 x216x26x83x26xy3y2 8x8y 25a3b3 35ab2c2(x5y)y2 xy8x28xy7(xy)22x22xa3x23a29x29y23(xy)2 45a2bc345a3bc x236x28x123a26ay3y2 8a8y 15a2b2c 45abc3(2x4y)y2 x2y10x210xy9(xy)210z210za2z22a27x27y22(xy)2 20a2b2c 10a3bc3 x21x24x37a214an7n2 7a7n 5a2b3c50abc2(3x6y)y3 xy34x24xy5(xy)210z210za5z25a22x22y22(xy)2 25a2b

5、2c3 30a2bc x264x213x405m210mn5n2 3m3n5ab2 40abc(2x5y)y3 xy24x24xy3(xy)26z26zc5z25c28x28y22(xy)2 40a2bc335ab3c3 x21x27x68m216mn8n2 4m4n20a2b 50a2bc2(x6)y3 xy2x22xy4(xy)22z22zb5z25b26x26y25(xy)2 40a3bc 15ab2c x236x29x186m212mb6b2 8m8b 25a2b2c50a3bc2(2x4)y2 xy36x26xy2(xy)210y210ya2y22a28x28y25(xy)2 15a

6、b2c30abc x216x29x202m24mb2b2 7m7b5abc30abc(3x6y)y2 x3y38x28xy8(xy)28z28zb4z24b25x25y23(xy)2 10ab2c325a2b2c x225x28x153m26mn3n2 6m6n 15a3bc 50a2b3c(x5y)y x3y6x26xy3(xy)28y28yc3y23c26x26y23(xy)2 25ab2c10a3b2c3 x21x24x33a26ab3b2 3a3b15a3b3c30abc(3x5y)y xy6x26xy5(xy)28y28ya3y23a22x22y22(xy)2 45ab3c315ab

7、2c x281x212x274a28an4n2 10a10n5a3b2c 30a3b3c2(x4y)y2 x2y34x24xy8(xy)22x22xc2x22c27x27y24(xy)2 45a3b2c 30abc2 x225x210x254a28ay4y2 10a10y 15ab3c 50a3bc2(2x6y)y3 x2y10x210xy8(xy)210z210zc4z24c26x26y23(xy)240a2bc10a2b3c3 x225x29x202x24xy2y2 4x4y 5abc40a3bc3(x5)y xy34x24xy6(xy)210x210xc2x22c24x24y25(xy)

8、2 5abc2 5abc3 x225x29x204a28ay4y2 9a9y 5a3bc40a2b2c(2x5)y xy10x210xy9(xy)210z210zb5z25b27x27y25(xy)2 35a3bc2 5a3b3c x216x27x127m214mn7n2 8m8n25a2b 35a2b2c3(x4y)y2 xy38x28xy2(xy)22x22xa3x23a23x23y22(xy)210abc 35abc x2100x215x503m26mb3b2 3m3b 10ab 40a2bc(x4)y xy10x210xy4(xy)28z28zc5z25c24x24y25(xy)2 4

9、5a2b3c 20abc x249x211x282m24mn2n2 6m6n25ab3 30a2b2c2(x5)y xy10x210xy3(xy)28x28xb4x24b24x24y25(xy)2 45a3bc220a2bc x225x29x205a210an5n2 2a2n 5ab 50a2b2c(x5y)y x2y38x28xy9(xy)210y210ya3y23a29x29y22(xy)225ab3c 15abc3 x21x26x52m24mn2n2 4m4n 5a3b2 35abc2(2x5)y2 x3y38x28xy3(xy)22x22xc3x23c23x23y22(xy)25a3b

10、2c25a3b2c x264x213x407m214mn7n2 8m8n 20ab330a3b3c(2x5y)y3 xy8x28xy7(xy)24y24ya2y22a29x29y25(xy)210abc40abc x236x211x302m24mn2n2 4m4n10ab2 40a2b2c(2x5y)y xy28x28xy2(xy)22y22ya5y25a29x29y23(xy)2 10ab3c340abc x249x211x284m28mb4b2 5m5b25ab245abc(2x6y)y2 xy6x26xy2(xy)28y28yb3y23b29x29y23(xy)2 35ab3c2 45a

11、3bc3 x264x213x404x28xy4y2 5x5y 20a3b3c45a3b3c2(x6y)y xy4x24xy7(xy)22x22xc2x22c24x24y23(xy)2 30ab2c20abc3 x225x210x257m214mn7n2 2m2n 25abc45abc2(3x5)y x2y8x28xy6(xy)22x22xa5x25a26x26y22(xy)2 25ab2c 20abc x24x24x45m210my5y2 2m2y5ab3 35a3b3c3(3x5)y xy310x210xy10(xy)26y26yb4y24b25x25y24(xy)2 30a3bc2 50a

12、3b2c3 x216x210x248a216ay8y2 9a9y25abc45abc(2x6)y2 xy26x26xy5(xy)28x28xb2x22b25x25y22(xy)240a3bc10a2bc x236x210x243m26my3y2 6m6y10ab 30a2bc(x5y)y xy34x24xy10(xy)28x28xb3x23b26x26y22(xy)2 30a2b2c340ab3c3 x249x212x356a212ab6b2 6a6b20ab2c30abc(2x4y)y xy26x26xy3(xy)28z28zb2z22b28x28y25(xy)2 5a2bc 25ab2c3

13、 x24x27x104m28mn4n2 8m8n 25ab3c 50a3b3c(2x5)y3 xy6x26xy6(xy)210z210zc4z24c26x26y22(xy)245a2bc320a2b3c2 x216x210x243x26xn3n2 9x9n15ab 30ab2c2(3x6y)y2 x2y4x24xy8(xy)26x26xa4x24a28x28y24(xy)225a2b3c2 50ab3c x225x29x207m214mn7n2 10m10n10ab30ab3c2(2x5)y2 xy10x210xy7(xy)22x22xc4x24c25x25y24(xy)240a3b3c 10

14、abc x264x212x325m210my5y2 3m3y 25ab230ab2c2(x6y)y3 xy8x28xy6(xy)26x26xa2x22a24x24y25(xy)2 35ab2c30a3b3c x2100x213x302m24mn2n2 7m7n15a3b35ab3c2(x5)y3 xy28x28xy2(xy)22z22zb4z24b27x27y25(xy)2 35a3b2c235abc x281x212x277x214xy7y2 10x10y10a2b 50ab3c(3x6)y2 x2y210x210xy9(xy)24x24xb4x24b22x22y23(xy)230ab3c

15、15a3bc3 x216x210x243a26an3n2 5a5n5ab240a2bc2(2x5y)y xy34x24xy10(xy)210y210yb3y23b22x22y24(xy)2 15a3bc2 10ab3c2 x281x213x362a24ab2b2 9a9b 15a2b235a2bc3(x6y)y xy32x22xy6(xy)22y22ya5y25a29x29y23(xy)2 35a3b2c 20a3b3c2 x21x27x62x24xb2b2 8x8b5a3b2c35a3bc(2x6)y x2y6x26xy2(xy)24y24yc3y23c26x26y25(xy)2 15a3b

16、c25a2bc x29x29x182x24xy2y2 10x10y 25a2b240ab3c2(x6y)y x2y10x210xy6(xy)210z210zb3z23b25x25y22(xy)2 5ab3c 20abc2 x281x214x458m216my8y2 4m4y 10ab2c30a3bc(3x4y)y xy26x26xy8(xy)24x24xa2x22a27x27y24(xy)225a3bc2 20a3bc x281x214x453m26my3y2 2m2y10ab30a2b2c2(3x6y)y2 x2y4x24xy3(xy)26z26zc4z24c24x24y24(xy)220a2b3c 30ab3c x24x24x47a214an7n2 9a9n10a3b 40a2bc(x4)y xy4x24xy8(xy)28x28xa4x24a22x22y22(xy)2 20abc 15ab3c2