人教版初中八年级数学上册分式的化简练习题精选62.docx

1、人教版初中八年级数学上册分式的化简练习题精选62(3x6)y3 xy6x26xy4(xy)22x22xc5x25c24x24y23(xy)245a3bc45a2b2c3 x264x214x486m212my6y2 4m4y 25abc 35ab2c3(3x5)y xy8x28xy5(xy)24x24xb3x23b25x25y23(xy)235a2b3c235ab3c x2100x212x204a28ab4b2 8a8b20a3bc30a3bc2(2x4)y3 x3y10x210xy8(xy)26x26xc3x23c25x25y24(xy)240abc5abc2 x21x23x27m214mb7

2、b2 9m9b 20a2b35ab2c(x6y)y xy310x210xy10(xy)22z22zb4z24b23x23y25(xy)245ab3c40a3bc2 x24x27x108a216ab8b2 3a3b 15ab 50a3b3c(x6y)y x3y10x210xy2(xy)210y210yb5y25b22x22y24(xy)25abc 5a2bc x29x25x63x26xb3b2 5x5b 25a2b50a3bc(3x6)y3 xy36x26xy7(xy)22y22ya3y23a27x27y23(xy)2 45abc3 20a2b2c x236x210x245a210ay5y2 8

3、a8y 5ab3c50abc(x5y)y3 x2y8x28xy5(xy)28x28xa2x22a27x27y23(xy)2 40a2bc 35a2bc2 x29x27x125m210mn5n2 3m3n 20a2b 35a2b3c2(3x6)y x2y38x28xy6(xy)28y28ya3y23a22x22y24(xy)2 25abc5a3b3c x29x28x156m212mb6b2 3m3b 5a3b 50abc(x4)y xy28x28xy3(xy)26z26zc5z25c23x23y22(xy)235abc3 30a3bc x24x24x42a24ay2y2 8a8y 15a2b2

4、35a3b2c2(x5y)y3 xy32x22xy3(xy)26z26zb4z24b29x29y24(xy)215a3bc2 35ab2c2 x21x26x53a26an3n2 2a2n 25a3b3c40ab2c3(x6y)y x3y10x210xy9(xy)24x24xc5x25c25x25y24(xy)235abc2 10abc x2100x216x608m216my8y2 9m9y 20abc40abc3(x5y)y3 x2y4x24xy9(xy)24z24zc4z24c26x26y24(xy)215a2bc240a2b2c x216x27x128m216my8y2 3m3y10ab5

5、0abc(3x6y)y x2y8x28xy10(xy)24x24xb5x25b27x27y25(xy)2 5a2b2c330a3b2c x236x212x363x26xy3y2 3x3y 5abc 50abc2(x4y)y xy22x22xy4(xy)26x26xb2x22b28x28y25(xy)225abc2 25a2bc x281x215x543a26ay3y2 7a7y5ab245a3bc(x6)y xy2x22xy10(xy)22y22yc2y22c26x26y24(xy)225abc325a3b2c2 x24x27x102m24mn2n2 3m3n 10ab35abc(x5)y x

6、2y38x28xy2(xy)22y22yc4y24c25x25y22(xy)2 30abc240ab2c x24x28x125x210xn5n2 10x10n20a2b3c30ab3c2(x5y)y x3y22x22xy8(xy)210y210yb2y22b22x22y25(xy)215abc3 20a3bc x21x26x53m26my3y2 2m2y 15a2b3 50abc3(3x5y)y2 xy210x210xy3(xy)210x210xb5x25b22x22y24(xy)2 5a2bc3 15a2b3c x225x28x157a214ay7y2 8a8y 10a3b 50a3b2c2

7、(x5y)y2 x2y310x210xy2(xy)26y26ya4y24a27x27y23(xy)235ab3c20a3bc2 x24x25x66x212xy6y2 10x10y 10a2bc 35ab3c3(x6y)y x2y24x24xy8(xy)210y210yb4y24b23x23y25(xy)2 40a2bc235abc2 x236x211x306a212an6n2 8a8n15a3bc40a3b3c(x4y)y x3y22x22xy4(xy)22z22za5z25a28x28y24(xy)2 25abc50ab3c x216x27x126a212ay6y2 2a2y 15a3b 4

8、5ab3c2(3x4)y3 x2y22x22xy6(xy)210z210zb4z24b23x23y24(xy)215ab3c 15a3b3c3 x29x25x68m216mn8n2 2m2n 20abc 30ab3c(2x4)y2 x3y34x24xy8(xy)28z28zc3z23c29x29y23(xy)2 5ab2c 20ab3c x281x213x362x24xn2n2 4x4n 5a2b335ab3c3(x6y)y2 xy2x22xy9(xy)28z28zb4z24b28x28y22(xy)2 5ab2c315a3b3c2 x24x27x106m212mb6b2 5m5b 20ab3

9、 50a2bc(x5)y2 x2y310x210xy10(xy)28y28yb3y23b25x25y24(xy)2 50a3bc3 40a3bc2 x29x27x127m214my7y2 4m4y 15ab3c30abc(x4y)y xy210x210xy9(xy)210y210yb4y24b28x28y24(xy)2 20a3b2c2 50abc x281x214x452x24xy2y2 5x5y25abc 30a3b2c(x6)y2 x3y28x28xy5(xy)28x28xb4x24b22x22y25(xy)2 25abc230a2b3c x2100x215x503m26mb3b2 4m

10、4b 20ab45ab2c(3x5y)y x3y2x22xy4(xy)26y26ya3y23a26x26y22(xy)2 15ab2c 10abc3 x216x27x125a210an5n2 7a7n20ab2c45a2bc3(2x4)y x3y24x24xy9(xy)210y210yc3y23c26x26y23(xy)235a3b3c 30a3b2c3 x2100x212x203m26mn3n2 9m9n20a2b3c 35a2b3c(x4)y x3y34x24xy10(xy)22z22za3z23a29x29y23(xy)2 20abc2 15a2bc x249x210x216x212xy

11、6y2 2x2y 10a2b2c 40a2b2c(x4y)y2 xy8x28xy4(xy)28z28za3z23a26x26y23(xy)25abc10abc2 x21x24x34a28an4n2 7a7n15ab2c 50a2b3c(x5y)y3 xy34x24xy8(xy)22y22yb5y25b28x28y22(xy)235abc40abc x29x25x65a210ab5b2 10a10b 10ab345ab3c3(x4y)y x3y10x210xy10(xy)26y26yb2y22b26x26y24(xy)2 50abc15abc x29x29x188m216my8y2 7m7y15

12、a2bc45a2bc2(x6y)y xy210x210xy8(xy)22y22yb5y25b26x26y25(xy)2 20a3bc 30a3b3c x216x28x165x210xy5y2 3x3y 5ab 30a2b2c(3x6)y3 xy8x28xy7(xy)24z24zb3z23b25x25y25(xy)2 5a3bc 40a2b2c x21x24x35a210ab5b2 2a2b25abc50ab3c2(3x6)y x3y28x28xy4(xy)28x28xb5x25b27x27y24(xy)2 25a2b3c325abc x249x210x213a26an3n2 9a9n 10ab

13、c35ab2c(2x5y)y x2y6x26xy8(xy)22x22xa4x24a29x29y22(xy)2 10ab2c3 45ab3c2 x264x214x485m210my5y2 2m2y20a3b 40abc2(x6y)y x2y32x22xy3(xy)22y22yc4y24c23x23y24(xy)25ab3c 5abc x2100x212x203a26ay3y2 2a2y10ab3c30a3b3c2(3x5y)y2 xy4x24xy4(xy)26y26yb3y23b27x27y24(xy)2 10ab2c220a2bc2 x281x212x272a24ay2y2 7a7y5ab33

14、0ab3c(2x5)y x2y22x22xy7(xy)210y210yc5y25c29x29y24(xy)2 50ab2c2 30a2b3c3 x236x211x307x214xn7n2 7x7n 15a2b2 30a3b3c3(x6y)y xy22x22xy9(xy)26z26za2z22a24x24y22(xy)2 30abc 15a2b2c x281x214x456a212an6n2 4a4n5ab330abc(x5y)y x3y6x26xy4(xy)26z26za5z25a23x23y25(xy)240ab2c2 5a2bc3 x264x213x406m212mn6n2 10m10n

15、5a3bc50abc2(x5y)y x3y4x24xy3(xy)24z24zb2z22b25x25y24(xy)2 35ab3c335abc2 x21x25x44m28mn4n2 3m3n10ab30ab3c(2x4y)y x2y22x22xy3(xy)26y26yc3y23c24x24y25(xy)2 10ab3c 15abc2 x21x24x32a24an2n2 10a10n25ab235a3bc3(x6y)y xy34x24xy9(xy)22z22za4z24a25x25y22(xy)215abc45a3bc x249x211x283a26ay3y2 9a9y 10ab2 30ab2c2

16、(2x4y)y3 x2y32x22xy2(xy)26z26za2z22a27x27y22(xy)245abc35ab3c2 x264x213x407x214xb7b2 7x7b20ab2c 30a2bc(3x5y)y x2y10x210xy3(xy)26x26xa4x24a23x23y23(xy)2 50a2bc335a3bc3 x249x213x426a212ab6b2 4a4b25a2bc30a2bc(x6)y xy26x26xy6(xy)210z210zc5z25c28x28y22(xy)220a3bc3 5a2b2c x281x214x453x26xb3b2 9x9b 15a3b 40a2b2c(x6)y2 x3y4x24xy5(xy)210y210yb2y22b28x28y25(xy)230a3bc3 5a3b2c x236x29x186a212ay