人教版初中八年级数学上册分式的化简练习题25.doc

1、40ab2c340a2b2c x24x24x46a212an6n2 2a2n15ab3c50ab3c(x4)y2 xy34x24xy6(xy)210z210za3z23a25x25y23(xy)2 45a3b3c50a2b3c2 x21x25x48m216my8y2 2m2y25a2b 40a3bc3(x4y)y3 x2y24x24xy3(xy)22y22yc3y23c25x25y22(xy)230a3b2c 10a2bc x21x23x25m210mn5n2 2m2n25a3b 35a2bc2(x5)y xy22x22xy7(xy)26x26xa2x22a26x26y22(xy)210a2b

2、c50a2bc x249x211x286a212an6n2 5a5n10ab2 30a3bc(x6)y3 xy28x28xy2(xy)210z210za3z23a24x24y22(xy)225ab3c345a3b2c2 x216x27x127a214ay7y2 5a5y 5a2b40abc(3x5)y2 xy22x22xy9(xy)210z210zb5z25b27x27y24(xy)2 10abc3 30ab2c x281x213x362x24xy2y2 6x6y 10ab50a2b3c3(x4y)y x2y310x210xy4(xy)28y28yb5y25b26x26y25(xy)220a3

3、bc3 10abc3 x2100x214x407m214my7y2 9m9y10abc30a3b2c(3x4)y x3y6x26xy7(xy)28z28za3z23a24x24y23(xy)2 15a3b2c2 25ab3c3 x216x27x122a24ab2b2 9a9b20a3b2c45ab3c(2x4y)y2 xy26x26xy4(xy)24x24xc5x25c28x28y22(xy)215a2b3c5a3b2c3 x2100x213x302m24mb2b2 10m10b 5ab345a3bc(2x6y)y3 x2y210x210xy4(xy)26x26xb4x24b24x24y22(

4、xy)210ab2c225abc x236x28x122x24xn2n2 7x7n15a2b2c 50a2bc(2x4y)y x3y2x22xy8(xy)22y22yb2y22b26x26y23(xy)210ab3c220abc x216x26x83m26my3y2 2m2y25abc35a2b2c(x6)y2 x2y2x22xy8(xy)210y210ya4y24a23x23y24(xy)25a3b2c35a2b2c x281x211x182m24my2y2 10m10y 20a3b2c30a2bc3(3x4)y2 xy6x26xy8(xy)24x24xc2x22c26x26y24(xy)2

5、20a2bc30abc x216x29x202m24mb2b2 5m5b10ab3c40a2b3c3(x5y)y x2y4x24xy3(xy)26z26za5z25a23x23y22(xy)235a3b3c2 35a2bc3 x2100x212x207x214xy7y2 10x10y 15a2b235ab3c(3x4y)y xy26x26xy6(xy)210x210xa2x22a26x26y23(xy)2 15a2bc 5abc x249x211x288a216an8n2 10a10n25a2b 50a3bc(3x6y)y3 x3y8x28xy4(xy)210y210yb2y22b22x22y

6、25(xy)2 5a2b3c 40a3bc x281x214x454x28xy4y2 4x4y5ab2 35a3b3c3(2x4)y2 x2y310x210xy8(xy)210x210xc4x24c25x25y23(xy)240a3b2c210abc3 x236x212x362x24xy2y2 10x10y15ab3c 30a3b3c3(3x6y)y2 x3y4x24xy3(xy)28z28zc5z25c28x28y25(xy)240ab3c25abc x216x27x128a216an8n2 8a8n 25ab2c 50a3bc3(x5)y2 xy36x26xy6(xy)22y22ya2y2

7、2a23x23y23(xy)220ab3c10ab3c x225x27x108m216mb8b2 10m10b 5ab 40abc2(3x6y)y x3y10x210xy9(xy)22x22xb5x25b22x22y25(xy)225a3bc330a3b3c2 x2100x213x305x210xy5y2 7x7y 25abc40abc(x6y)y3 xy24x24xy4(xy)24y24yc4y24c24x24y24(xy)2 15ab2c25abc2 x236x211x308x216xy8y2 6x6y5ab235a3b2c3(2x4)y3 xy24x24xy8(xy)28x28xb4x2

8、4b22x22y24(xy)2 50ab2c3 15a3b2c x281x213x366a212ab6b2 8a8b 5ab3c30ab3c2(2x5y)y3 xy4x24xy10(xy)22z22zb4z24b28x28y24(xy)245abc35a3bc2 x29x25x66x212xn6n2 9x9n 20ab335ab3c2(x4)y2 xy36x26xy5(xy)26y26yb2y22b29x29y23(xy)220a2bc2 20a3b2c x29x25x64m28my4y2 7m7y 10a3bc 30a2b3c2(3x4)y2 xy8x28xy5(xy)26y26ya5y25

9、a25x25y23(xy)2 15ab2c 25a2b3c x236x28x125a210ab5b2 2a2b 5a2b3c 35abc(x4y)y2 xy4x24xy6(xy)24y24ya3y23a25x25y22(xy)215ab3c2 20abc2 x264x211x247x214xb7b2 8x8b 10ab30a3b3c2(2x4y)y xy38x28xy3(xy)28x28xc4x24c24x24y25(xy)240a3b3c 15a3bc x264x211x245m210mb5b2 5m5b 10a2b50abc2(x6)y xy38x28xy10(xy)26y26yb5y25

10、b22x22y23(xy)220a3bc50a3bc x24x28x125a210ay5y2 6a6y15a2b40a3b3c3(x4)y2 x3y6x26xy4(xy)210z210za5z25a22x22y22(xy)230a2bc 35a2bc2 x264x210x164m28my4y2 10m10y 20a2b 45a3b3c2(x6)y xy310x210xy6(xy)210z210zc2z22c29x29y24(xy)220a2bc2 35abc x2100x212x204m28my4y2 3m3y10a3b2c 30a2bc3(x6y)y x3y6x26xy5(xy)28y28y

11、a2y22a24x24y22(xy)230ab3c 10abc2 x236x28x125x210xy5y2 9x9y 15abc35ab2c2(2x6y)y3 xy6x26xy3(xy)28x28xb5x25b25x25y25(xy)2 20abc340abc2 x24x28x125m210mb5b2 3m3b 25a3bc 45a2bc2(x5y)y x3y36x26xy2(xy)210x210xb3x23b28x28y23(xy)210ab2c225a3bc x264x212x328x216xn8n2 10x10n20ab2c30ab3c2(3x6)y x2y2x22xy9(xy)24x2

12、4xa2x22a23x23y24(xy)2 25a2bc2 50a3bc3 x216x29x205m210my5y2 8m8y 10a2b3c 35a3bc2(x6y)y3 x3y22x22xy7(xy)26x26xc2x22c29x29y22(xy)2 25abc 15ab2c2 x281x211x185a210an5n2 3a3n20abc30a2bc2(3x4y)y xy6x26xy5(xy)210x210xa5x25a28x28y25(xy)2 35abc3 40a3b3c x281x211x184m28mn4n2 7m7n 15a2bc40abc3(3x4y)y x2y8x28xy3

13、(xy)26z26za5z25a28x28y25(xy)220a2b2c3 50a3bc x249x210x212a24an2n2 5a5n5abc 45abc(3x4)y xy4x24xy7(xy)24y24ya5y25a22x22y23(xy)25a3b3c245ab3c3 x236x212x367m214mb7b2 3m3b5a2b2 30a2b3c(2x6)y xy310x210xy3(xy)28z28za4z24a26x26y22(xy)2 35a3bc5ab2c3 x24x24x45a210ay5y2 2a2y 25ab335abc(2x6)y xy34x24xy6(xy)24x2

14、4xa2x22a23x23y25(xy)2 40a2b2c 10a2b2c x264x213x405m210my5y2 9m9y5a2b2 30a3bc2(3x4y)y xy6x26xy5(xy)26z26za2z22a23x23y24(xy)240a2bc 25a2bc x2100x212x202x24xy2y2 8x8y10ab3c 50ab3c(x6)y2 x2y8x28xy7(xy)28z28za5z25a28x28y25(xy)250a2b3c35a2b2c2 x236x211x306m212mn6n2 9m9n 20a3b2c 30ab2c(2x4)y xy26x26xy4(xy)

15、26z26za2z22a28x28y25(xy)2 10a3b3c40ab2c x24x26x84x28xn4n2 8x8n 10a2bc 45ab2c2(3x6y)y xy210x210xy10(xy)22y22yc2y22c29x29y24(xy)25ab2c 10abc x249x212x358m216mn8n2 5m5n 25a3b2c 35a3b3c(x6)y x3y10x210xy3(xy)210z210zb4z24b29x29y22(xy)2 15abc 45abc3 x216x29x207a214an7n2 4a4n15a3b45a3b3c(x6)y3 x2y24x24xy7(

16、xy)210y210yc5y25c26x26y25(xy)2 35a2bc3 25ab3c2 x249x29x144x28xy4y2 9x9y 25a2b2c30abc2(x6y)y3 xy24x24xy10(xy)210x210xa2x22a26x26y22(xy)2 30a2bc250a2b2c x281x212x276m212mb6b2 8m8b 15ab45ab2c(3x4y)y x3y22x22xy2(xy)210x210xa2x22a28x28y25(xy)220a3b2c335a3b2c3 x29x26x97x214xb7b2 6x6b15a3b3c 35abc3(2x4y)y2 x3y6x26xy9(xy)210x210xc4x24c25x25y25(xy)2 35a3bc2 15a3bc x29x25x68m216my8y2 8m8y 25a3b2c 35abc3(3x5)y3 x2y38x28xy2(xy)24y24yb2y22b28x28y23(xy)2 35a3bc2 5abc3 x225x211x305x210xb5b2 3x3b10a3b 50abc(2x6y)y xy38x28xy7(xy)22z22za2z22a29x29y24(xy)2