人教版初中八年级数学上册分式的化简练习题精选28.docx

1、人教版初中八年级数学上册分式的化简练习题精选2825a2bc2 5abc2 x236x212x362m24my2y2 4m4y 5a3b2c 45ab3c(3x4y)y2 x2y32x22xy8(xy)28z28za4z24a27x27y23(xy)230ab2c2 30a3b3c x216x26x82x24xy2y2 5x5y5a3b2c 50ab2c(2x5y)y x2y32x22xy4(xy)22y22ya4y24a27x27y22(xy)2 20ab2c 45a3b2c3 x264x212x322a24an2n2 4a4n 20abc 35a3b3c(3x5)y xy34x24xy3(

2、xy)22y22yb3y23b25x25y24(xy)215ab3c45a3b2c x29x27x124a28ab4b2 10a10b10a3b50a3bc2(x4y)y xy4x24xy7(xy)210z210zb4z24b29x29y25(xy)2 40abc45abc x21x24x33x26xn3n2 5x5n 5a2b50a2b2c3(3x5y)y xy32x22xy6(xy)24x24xc4x24c25x25y24(xy)215abc215a3bc x249x29x148a216an8n2 10a10n 20a3b3 30a3bc3(3x5)y2 x2y310x210xy8(xy)

3、28y28yc5y25c28x28y25(xy)210a3b3c2 40ab2c2 x264x214x484m28my4y2 10m10y20a3b2 40abc(x6)y x2y34x24xy6(xy)22y22ya5y25a29x29y22(xy)2 5a2b3c 50a2bc x2100x214x407x214xn7n2 3x3n25ab40a3bc(2x6y)y3 xy28x28xy4(xy)24y24yb3y23b26x26y23(xy)25abc45ab3c3 x281x211x183x26xn3n2 9x9n20a3b2c 40abc(x5)y xy22x22xy6(xy)24x

4、24xb5x25b27x27y22(xy)2 20abc 35a2b2c x21x25x47m214mb7b2 8m8b25a3b3c 45a2bc2(3x4)y2 xy6x26xy6(xy)22z22zc5z25c25x25y25(xy)25a3bc215ab3c2 x216x210x244m28mn4n2 6m6n25a2b330a2b3c(2x5y)y xy2x22xy2(xy)210x210xb5x25b23x23y22(xy)210ab3c3 45a3b2c x24x27x108x216xn8n2 6x6n10a3bc35a3bc2(2x4)y x2y6x26xy10(xy)24x2

5、4xb3x23b22x22y25(xy)2 40a3b3c 20a3bc2 x216x29x205a210ay5y2 2a2y 5a3b 40a2b2c(2x5)y xy32x22xy7(xy)210z210zc4z24c28x28y23(xy)210a2bc2 40ab3c x21x24x36x212xy6y2 6x6y20a3b40a2b3c(2x6)y x2y24x24xy2(xy)28x28xc5x25c29x29y22(xy)2 35abc 40a3b2c x2100x216x605m210mb5b2 8m8b 25ab 40a3bc2(2x6y)y3 x3y6x26xy10(xy)

6、210z210za4z24a29x29y25(xy)225ab3c2 35abc x29x25x67m214mb7b2 6m6b10ab245a2b3c(x6)y x2y8x28xy4(xy)26y26yb3y23b29x29y25(xy)2 45a3b2c335a2b2c3 x281x213x363m26mn3n2 10m10n 25ab2c35ab2c(x6)y x3y2x22xy4(xy)26z26za2z22a23x23y24(xy)2 50a2b2c 50a3b3c3 x21x27x67x214xb7b2 6x6b10ab3c45abc3(x5)y xy4x24xy3(xy)24z2

7、4zb2z22b22x22y22(xy)2 25ab2c25ab3c3 x264x211x248m216my8y2 10m10y5ab2 50a2b3c(2x4y)y2 x3y8x28xy4(xy)24y24ya3y23a26x26y23(xy)215a3b3c 5a3b3c3 x24x24x47x214xb7b2 8x8b10ab3c40ab3c3(x4y)y3 xy24x24xy3(xy)28z28zb5z25b28x28y24(xy)2 50a3bc310a2b3c3 x21x24x37x214xb7b2 9x9b25a2b250a2bc2(3x5y)y xy26x26xy7(xy)26

8、x26xa5x25a29x29y25(xy)25a3b3c10ab2c3 x2100x213x304m28mn4n2 8m8n5ab2c 35abc(2x4)y2 xy24x24xy9(xy)24x24xa2x22a22x22y23(xy)2 35ab2c 20a2bc x21x26x55m210mn5n2 9m9n10ab2c 45a3b2c2(x5y)y3 xy310x210xy6(xy)28z28zb5z25b22x22y22(xy)2 35abc2 25abc x216x29x204x28xn4n2 9x9n 20a3bc50a2b2c2(x6)y3 xy8x28xy4(xy)24y2

9、4yc4y24c26x26y22(xy)245a2b3c350a3b2c x236x212x365m210mb5b2 4m4b20a2b2 45a3b3c(2x4)y x3y28x28xy4(xy)210y210yb4y24b23x23y24(xy)2 30a2bc3 10abc3 x249x210x216x212xb6b2 2x2b15a2b 50abc(x4)y3 xy10x210xy9(xy)210z210zc3z23c24x24y22(xy)2 25ab2c2 5a3b3c x216x28x162a24ab2b2 7a7b15abc30a2b3c(x4)y x2y26x26xy7(xy

10、)210z210zb2z22b25x25y25(xy)2 25abc45ab2c3 x236x28x128x216xb8b2 3x3b5ab2c 50a3b2c2(2x4)y x2y2x22xy4(xy)24x24xb4x24b28x28y22(xy)235abc 35a2b2c x225x27x103a26ay3y2 9a9y5ab2c 30ab2c2(x5)y xy4x24xy3(xy)26y26yc4y24c25x25y23(xy)235a2bc 40abc2 x281x211x182x24xb2b2 7x7b20a3b2 45ab3c(x5y)y xy8x28xy10(xy)22y22

11、yb5y25b24x24y25(xy)215a3b3c 30a3bc2 x249x212x355m210mb5b2 7m7b 15ab235ab2c(x6)y xy8x28xy3(xy)22z22za5z25a27x27y25(xy)240a3bc330a2bc x21x24x34m28mn4n2 6m6n 15abc35a3b3c(x6)y3 xy28x28xy2(xy)210z210zc5z25c29x29y23(xy)215a2bc25ab2c2 x2100x216x604x28xb4b2 2x2b 25a3b 35abc2(3x4)y2 xy2x22xy9(xy)28x28xc2x22

12、c26x26y25(xy)2 20a3bc35abc x264x213x407x214xb7b2 7x7b 5a2bc 30ab3c2(x6)y2 xy4x24xy4(xy)24y24ya4y24a26x26y24(xy)2 10a3bc5abc2 x216x26x82m24mb2b2 4m4b 10a2b3c 30ab2c(x5)y2 xy28x28xy9(xy)26x26xc3x23c29x29y22(xy)210a3b2c225abc x225x211x304x28xb4b2 7x7b15a2bc35a2bc(3x4)y3 x3y22x22xy3(xy)26y26ya5y25a22x22

13、y22(xy)250a2b3c 30abc x264x214x485a210ab5b2 8a8b15a3bc 30abc3(x5)y x3y32x22xy8(xy)22y22yb5y25b25x25y25(xy)2 5ab2c2 45a3bc3 x29x27x124m28mn4n2 3m3n5a2b 40a2bc(3x4)y x3y28x28xy3(xy)210z210za2z22a29x29y24(xy)2 35a2b2c 25a2bc3 x21x24x35m210mb5b2 6m6b 20a2b240abc(2x5y)y xy2x22xy3(xy)24y24ya4y24a23x23y22(

14、xy)2 25ab2c40a3b2c3 x2100x212x203m26mb3b2 3m3b 5ab3c40abc3(x4y)y2 x2y28x28xy8(xy)28x28xc3x23c26x26y24(xy)250a3b2c 50a2bc x24x24x42m24mb2b2 7m7b 25a2bc 30a2bc3(2x6)y3 x3y38x28xy5(xy)28y28yc3y23c29x29y25(xy)220abc20abc x216x29x205x210xn5n2 6x6n 25a3b2c50abc2(3x6y)y3 x2y2x22xy7(xy)28z28za5z25a25x25y25(

15、xy)2 30abc3 35a3b2c x21x26x54m28my4y2 3m3y 5a3bc50abc(2x4y)y x3y4x24xy4(xy)24z24za5z25a28x28y24(xy)2 40a3bc225a3bc x249x210x215x210xn5n2 9x9n20ab330a2bc(x5)y3 x3y310x210xy5(xy)210z210zb4z24b25x25y22(xy)220abc245abc x281x213x367a214ab7b2 6a6b25a2b3c 30a3bc(x5y)y3 xy4x24xy9(xy)24z24zc5z25c24x24y25(xy)

16、2 45a2bc 25ab3c x29x25x62x24xn2n2 5x5n 15ab330a3bc(3x6)y3 xy28x28xy7(xy)22z22zb2z22b29x29y23(xy)2 20a2b3c3 30a2b2c2 x249x213x427a214an7n2 9a9n 25ab3c45a3bc(x4y)y x3y2x22xy5(xy)28y28ya4y24a24x24y23(xy)2 5a2b3c40a3b3c3 x21x25x43m26mb3b2 4m4b 5ab240ab3c(3x6y)y2 x2y24x24xy9(xy)22x22xc3x23c27x27y22(xy)230abc30abc2 x225x211x307a214ay7y2 5a5y15a2bc50a3bc3(x6y)y2 x2y210x210xy5(xy)26x