人教版初中八年级数学上册分式的化简练习题精选48.docx

1、人教版初中八年级数学上册分式的化简练习题精选48(x4y)y3 xy8x28xy3(xy)26z26za3z23a26x26y24(xy)225a2bc 15a2b2c x216x26x82m24mb2b2 2m2b 25a2bc 35a3b2c3(3x4)y3 xy10x210xy2(xy)210x210xc2x22c24x24y24(xy)215ab3c2 5a3bc2 x264x212x325m210mn5n2 2m2n10ab2 50abc(3x6)y xy22x22xy8(xy)210x210xc3x23c23x23y24(xy)2 15a2bc350a3bc x236x210x24

2、3x26xn3n2 5x5n 15abc 45ab3c(2x6y)y3 xy36x26xy5(xy)26x26xb5x25b27x27y23(xy)2 5ab2c325a2bc x236x210x248a216ab8b2 4a4b 25ab30a2b3c(3x5y)y xy34x24xy3(xy)24x24xb5x25b26x26y24(xy)2 20a2b3c250a3bc3 x249x211x282m24my2y2 2m2y 10a2b340a3b2c3(x4y)y xy26x26xy6(xy)210y210yc5y25c22x22y22(xy)2 30a3b2c3 10a3bc x264

3、x211x247a214an7n2 9a9n10ab3c50a2b2c(2x4y)y x2y310x210xy10(xy)24y24ya2y22a24x24y22(xy)2 15a2b2c240a2bc2 x21x26x52x24xy2y2 4x4y15ab3c 45abc2(x5y)y xy22x22xy10(xy)26z26zc5z25c23x23y25(xy)2 50a2bc 5abc x216x28x165a210ay5y2 10a10y 5a3bc40a3b3c(x4y)y xy22x22xy9(xy)22y22yc3y23c25x25y25(xy)220a2b2c 40abc2 x

4、21x26x55a210ab5b2 4a4b 10ab335a3bc(2x5y)y2 x2y38x28xy4(xy)22y22yc5y25c24x24y23(xy)2 45a2b2c35ab2c x2100x215x502x24xy2y2 9x9y 5ab3 45abc(2x6y)y x2y310x210xy8(xy)26x26xc3x23c28x28y23(xy)235a2bc340a2bc3 x24x24x42x24xn2n2 5x5n 20a2b45ab3c3(3x5y)y x3y4x24xy2(xy)210y210yc2y22c22x22y25(xy)2 20ab3c2 40a3bc2

5、 x225x29x208x216xy8y2 3x3y 15abc45a3b3c2(2x6y)y xy4x24xy10(xy)24z24za2z22a27x27y22(xy)250ab2c2 5a2b2c x281x214x454x28xn4n2 4x4n 5a2b 35a2b3c(2x4)y2 x3y8x28xy6(xy)210x210xb3x23b25x25y23(xy)2 15abc25a2b3c2 x236x212x367m214mb7b2 4m4b 10a2b245ab3c3(2x4)y3 x2y32x22xy9(xy)28z28zb3z23b26x26y23(xy)230a3b3c4

6、5ab2c2 x225x27x102x24xy2y2 2x2y 20a2b2 40a3b2c(3x5)y3 xy34x24xy2(xy)24y24ya5y25a29x29y25(xy)2 25ab3c15a2bc2 x21x25x47x214xy7y2 4x4y 20ab2c 30abc(3x6y)y x3y10x210xy7(xy)24x24xb5x25b22x22y25(xy)2 30abc15ab3c x249x211x286a212ab6b2 7a7b15ab30a3bc(2x5)y xy34x24xy10(xy)22y22yc5y25c28x28y25(xy)2 35ab2c10a3

7、b2c x264x212x326a212ab6b2 6a6b25a2b2c 40ab3c(3x5)y xy10x210xy7(xy)210z210za5z25a26x26y24(xy)215a2b3c335a3bc x216x27x125x210xn5n2 8x8n25a3b2c40abc(3x4y)y3 xy8x28xy3(xy)210z210zb5z25b27x27y25(xy)240ab2c2 35ab2c2 x21x26x52a24an2n2 9a9n25abc30ab2c(x5y)y x2y2x22xy3(xy)24x24xb2x22b27x27y24(xy)230ab2c3 20a

8、3bc x264x214x487m214mb7b2 10m10b 15ab3c 50a2bc3(2x6y)y x3y22x22xy5(xy)24y24yb2y22b29x29y25(xy)2 40abc3 45ab2c x264x211x248m216my8y2 10m10y 20abc 35ab3c2(x4)y3 xy10x210xy5(xy)22x22xc5x25c27x27y23(xy)2 5a2b2c3 10abc2 x236x210x248m216mn8n2 8m8n 10a3bc50a3bc(2x5)y xy26x26xy9(xy)28x28xb3x23b23x23y25(xy)2 5ab2c 30a2bc3 x21x24x34x28xb4b2 2x2b10ab3c 45abc3(2x5)y x2y2x22xy