初中八年级数学上册分式的化简练习题精选14.docx

1、初中八年级数学上册分式的化简练习题精选14(3x4y)y xy32x22xy6(xy)210y210yb4y24b25x25y23(xy)25ab3c35ab2c x281x213x367m214mb7b2 10m10b 10a3b2 35ab3c(x5)y3 xy10x210xy2(xy)22y22ya3y23a23x23y22(xy)220ab3c25a2bc x236x29x186x212xy6y2 7x7y20abc 30a3bc(3x5y)y3 x3y10x210xy10(xy)22z22zc2z22c25x25y24(xy)230a2bc3 30abc x264x214x483x2

2、6xn3n2 2x2n15a3b2c45a2bc(3x4)y x2y32x22xy5(xy)28y28yc2y22c27x27y23(xy)2 20a3bc2 35ab2c x29x28x154a28ab4b2 4a4b5a2b2 45a2bc(3x5)y3 xy4x24xy7(xy)26y26yb4y24b26x26y23(xy)2 15a2bc30a3b2c x21x25x45m210mb5b2 2m2b 20a2b2 50ab2c(x5)y3 xy2x22xy6(xy)22x22xb3x23b29x29y22(xy)2 15abc345ab3c x236x28x128m216mn8n2

3、3m3n 5ab40a2bc3(3x5)y2 xy28x28xy5(xy)22y22yc5y25c28x28y23(xy)245a2bc 15abc2 x281x212x277a214an7n2 4a4n5ab345abc3(3x6)y2 xy6x26xy2(xy)28x28xa3x23a24x24y22(xy)235a2bc230a3b3c x2100x216x604m28my4y2 3m3y20a2b50a3b2c(2x4)y x3y4x24xy2(xy)210z210zc4z24c28x28y23(xy)2 15ab3c3 25abc x2100x214x402x24xb2b2 8x8b

4、 20ab35ab2c3(x6)y3 xy6x26xy7(xy)210x210xa4x24a29x29y24(xy)2 15a3b2c2 25a2b2c x225x28x157x214xy7y2 7x7y 25ab2c 50ab3c3(x5)y3 xy32x22xy5(xy)28z28zb4z24b29x29y24(xy)2 5a2bc230a3b3c2 x236x212x366m212my6y2 9m9y 5a2b3c 35ab3c2(x4y)y xy36x26xy2(xy)22y22yc4y24c22x22y22(xy)25a3b2c230ab3c x21x25x45m210mn5n2 1

5、0m10n 15ab2 45a3bc2(2x4y)y x2y26x26xy7(xy)210y210yc3y23c23x23y22(xy)25abc350abc x281x213x363x26xn3n2 10x10n 10a2b45a3bc(x5y)y x2y32x22xy6(xy)210y210yb5y25b28x28y22(xy)2 35a3bc 15ab2c x225x29x208x216xb8b2 9x9b 5a3b 30a2bc(3x4y)y3 xy4x24xy2(xy)210y210yc2y22c29x29y24(xy)2 20ab3c2 45a3b2c x21x27x66m212m

6、b6b2 10m10b 25a2b30ab2c(x5)y2 x2y28x28xy7(xy)24y24yb5y25b29x29y23(xy)235a2bc40ab3c x236x210x244x28xb4b2 3x3b 20a3b45a2bc2(3x5)y x3y6x26xy9(xy)24y24yc5y25c24x24y23(xy)2 25ab3c320a3b3c x225x28x158a216ab8b2 6a6b 20ab340ab2c(2x5y)y2 xy28x28xy3(xy)28z28za4z24a26x26y25(xy)2 20abc2 50a3bc x21x26x56x212xn6n

7、2 9x9n 25ab340abc3(2x4)y xy24x24xy5(xy)210y210yb4y24b22x22y23(xy)240ab2c3 40a2bc2 x225x28x155x210xy5y2 2x2y15ab35a2b3c3(x6y)y2 x2y8x28xy7(xy)22z22zb5z25b26x26y25(xy)2 45a2b2c2 10abc x249x210x218m216mn8n2 2m2n 5a3b 45ab3c(x6)y xy6x26xy10(xy)26y26yc2y22c23x23y24(xy)250ab3c225a2b3c x2100x212x202x24xb2b

8、2 2x2b5ab50a2b2c2(2x4y)y3 xy10x210xy6(xy)22z22za5z25a22x22y25(xy)2 40a2bc30a3bc3 x264x210x166m212mb6b2 7m7b 15a3b330a3b2c(x5)y2 xy310x210xy5(xy)24y24ya5y25a25x25y23(xy)250abc5a3bc x264x214x487x214xn7n2 8x8n25ab35a3b3c2(x5)y x2y32x22xy10(xy)210y210yc5y25c28x28y25(xy)2 45a3b3c35ab3c2 x236x210x242x24xb2b2 10x10b 10a3b2 45a3b3c(x4y)y2 xy26x26xy9(xy)24x24x