八年级数学上册分式的化简17.docx

1、八年级数学上册分式的化简17 15a2b3c2 20a3b3c x264x211x245m210mb5b2 10m10b 20a2b3 40a3bc(x6)y2 x2y2x22xy10(xy)22y22ya3y23a26x26y23(xy)2 10a3bc 10abc x24x27x107x214xy7y2 2x2y 15ab35abc2(x5y)y3 xy22x22xy10(xy)210x210xb2x22b27x27y25(xy)2 35a3b2c220abc x249x212x356m212my6y2 5m5y 5ab3c40ab3c2(2x6y)y2 xy6x26xy3(xy)26y2

2、6yb2y22b29x29y23(xy)215a2b2c30a2bc x216x29x204a28an4n2 3a3n 20a2bc40abc(x4)y xy38x28xy10(xy)22y22yc4y24c25x25y23(xy)230abc 45ab3c3 x29x25x63a26ab3b2 9a9b15a2bc35a2bc(x6)y x3y10x210xy6(xy)26y26ya5y25a29x29y25(xy)2 5a2bc30ab2c x29x25x62a24an2n2 7a7n 10a2b3c 35a2b3c(x5)y xy210x210xy9(xy)24y24yc5y25c24x

3、24y24(xy)2 10a3bc 30abc x225x211x308m216mn8n2 10m10n5ab2c 35ab2c(3x4)y2 xy36x26xy8(xy)28z28zb5z25b29x29y23(xy)2 30ab3c 40a2bc3 x216x210x246m212mn6n2 4m4n 10abc 45a3bc2(3x6)y x2y210x210xy7(xy)24y24ya2y22a22x22y24(xy)2 10ab3c2 50ab2c2 x2100x214x403x26xy3y2 5x5y10a2b3 30a3bc3(x6y)y2 xy8x28xy8(xy)22y22y

4、c5y25c27x27y23(xy)250ab3c3 25abc x236x210x248m216mb8b2 3m3b5ab3c50a3bc(3x5y)y x3y38x28xy7(xy)210z210za5z25a27x27y23(xy)2 30a2b3c35a3b3c3 x2100x213x303x26xn3n2 7x7n5a3bc50abc(x4)y3 x2y210x210xy7(xy)210x210xb2x22b23x23y24(xy)220abc345ab3c3 x264x210x162x24xn2n2 4x4n15a3bc50ab2c(2x5)y2 xy4x24xy8(xy)26z2

5、6zb2z22b22x22y22(xy)2 40abc3 45ab3c x281x212x277m214mn7n2 2m2n5a2bc 40abc2(x6y)y3 x3y10x210xy3(xy)210x210xc4x24c25x25y24(xy)2 15abc 50a2b2c x281x211x186a212an6n2 4a4n 5ab 40a3bc2(x5y)y x2y2x22xy9(xy)28y28yb2y22b25x25y23(xy)210abc3 45a3bc2 x29x27x124x28xn4n2 2x2n 20a2b250ab2c2(x4y)y x3y32x22xy3(xy)22

6、x22xc2x22c24x24y24(xy)2 50a3bc2 10abc2 x29x29x185m210mn5n2 4m4n10a3bc 45abc(3x4y)y xy22x22xy7(xy)24y24yb2y22b29x29y24(xy)210a2b3c230a3b2c3 x264x212x323x26xb3b2 5x5b 25ab40ab2c(x5y)y2 x2y24x24xy4(xy)22z22za2z22a24x24y23(xy)215abc3 30abc2 x264x210x166a212an6n2 10a10n20a3b3c 30a2b2c(x4)y x3y2x22xy9(xy)24x24xb4x24b29x29y22(xy)240abc50abc x225x28x155m210mn5n2 10m10n 15ab45ab3c2(2x5y)y x3y38x28xy8(xy)22y22yb4y24b22x22y23(xy)2 25a3bc2 15abc x225x210x258m216mb8b2 7m7b 10abc 30a3bc3(x6)y3 x2y8x28xy8(xy)28x28xb2x22b26x26y24(xy)2