人教版八年级数学上册分式的乘除法练习题精选54.doc

1、 4y2x2 x2yx24xy4y2 x22xy 4x 3 x3x3 9x29 3x32x y3y 9xab 7ab28c2d 6cda22a1 a2a25a6 a21 4 681m2 m29m7a 14b8b2 11a210xy6xy 9a 8y36xy 3x3(xy) ax xa xy5a5b 11a2b2 10ab a2b2 81y2x2 x9yx218xy81y2 x29xy 9x 8 x2x4 4x216 2x42x2 y3y2 7xab3 9a2b4c2 6c2da22a1 a2a23a2 a21 8 436m2 m26m5a 10b8b 19a32xy6x3y3 3a 2y27x

2、y 5x2(xy) ay ya xy9a9b 11ab3 6ab a2b2 49y2x2 x7yx24xy4y2 x22xy 7x 6 x3x5 9x225 3x55x y26y 5xab3 3ab7c3d 6cda26a9 a1a23a2 a29 6 925m2 m25m9a 14b8b 13a22x2y6xy3 7b 8y9xy 3x2(xy) bm mb xy9a9b 7a2b 2ab a2b2 81y2x2 x9yx24xy4y2 x22xy 8x 3 x2x7 4x249 2x76x3 y35y 6x3ab 9ab27cd 6cda26a9 a1a22a1 a29 1 3100m2

3、m210m5a 16b6b3 17a20x2y9xy 9b 8y5xy 7x3(xy) ax xa xy3a3b 24a3b3 4ab a2b2 9y2x2 x3yx216xy64y2 x28xy 2x 8 x2x5 4x225 2x55x3 y24y2 5xa2b 3ab7c 4cda26a9 a1a24a3 a29 2 9100m2 m210m7a 16b4b2 11a214xy5xy 3b 4y27xy 7x8(xy) am ma xy7a7b 10ab 8ab a2b2 16y2x2 x4yx212xy36y2 x26xy 2x 9 x3x3 9x29 3x33x3 y24y 4xab

4、 5ab4c3 6cda22a1 a1a24a3 a21 6 49m2 m23m3a 10b8b2 19a216x2y3xy3 5a 8y4xy 9x9(xy) bm mb xy5a5b 19ab3 10ab a2b2 9y2x2 x3yx212xy36y2 x26xy 6x 6 x3x1 9x21 3x15x y26y 6xab3 7a2b37c2 8c3da22a1 a1a24a3 a21 4 5100m2 m210m5a 12b2b 19a20x3y4xy 5a 4y2xy 9x8(xy) by yb xy9a9b 16ab 4ab a2b2 36y2x2 x6yx212xy36y2 x

5、26xy 7x 8 x2x8 4x264 2x84x2 y3y 2xa3b2 5a3b34c2d 4cda26a9 a1a24a3 a29 4 749m2 m27m3a 18b8b 15a24x2y6xy3 9b 8y35xy 3x4(xy) bm mb xy7a7b 25a2b 8ab a2b2 49y2x2 x7yx26xy9y2 x23xy 9x 1 x3x2 9x24 3x29x2 y8y2 3x3a2b 5a3b39c 4cda22a1 a2a24a4 a21 5 225m2 m25m7a 20b6b 11a32xy5x2y 7a 8y2xy 7x8(xy) ax xa xy3a3b

6、 24ab 10ab a2b2 9y2x2 x3yx216xy64y2 x28xy 3x 4 x5x1 25x21 5x15x2 y26y 6x2a2b2 5ab39c2d 2cda26a9 a3a24a3 a29 4 9100m2 m210m7a 14b4b2 11a26xy3xy 3a 2y23xy 7x5(xy) by yb xy3a3b 11ab 2ab a2b2 81y2x2 x9yx210xy25y2 x25xy 4x 6 x2x9 4x281 2x95x y26y 2x3a2b 9ab25c2d 2cda26a9 a1a24a3 a29 5 29m2 m23m3a 16b4b 1

7、5a26x2y4x3y3 5a 2y2xy 7x6(xy) bm mb xy5a5b 6a2b 10ab a2b2 9y2x2 x3yx26xy9y2 x23xy 2x 6 x5x8 25x264 5x85x3 y6y2 6x3a2b 3ab6cd 2c2da24a4 a2a24a4 a24 6 516m2 m24m7a 18b4b 17a16xy5xy3 3b 8y38xy 5x3(xy) ax xa xy9a9b 14a3b 10ab a2b2 9y2x2 x3yx28xy16y2 x24xy 9x 7 x4x4 16x216 4x46x2 y7y 8x2a2b2 9ab37c2 6c3d

8、a22a1 a2a23a2 a21 6 336m2 m26m9a 20b4b3 11a318x3y5xy3 3b 6y33xy 5x8(xy) nm mn xy5a5b 19a2b 8ab a2b2 64y2x2 x8yx210xy25y2 x25xy 6x 7 x2x7 4x249 2x75x2 y4y3 6x3ab3 9ab3c 4c2da22a1 a1a23a2 a21 9 125m2 m25m5a 10b2b3 13a26x2y3xy 3b 2y4xy 5x2(xy) am ma xy5a5b 21ab 4ab a2b2 36y2x2 x6yx28xy16y2 x24xy 2x 6 x

9、2x4 4x216 2x49x y8y2 8x2a3b2 9ab24c 6cda22a1 a1a24a3 a21 1 3100m2 m210m5a 10b6b3 15a4x3y9x3y3 7b 6y39xy 5x5(xy) ay ya xy7a7b 27a2b2 6ab a2b2 36y2x2 x6yx216xy64y2 x28xy 8x 8 x3x6 9x236 3x66x2 y5y 6x3ab2 9a3b32cd 4c2da22a1 a1a24a3 a21 5 14m2 m22m3a 10b2b 17a214xy3x3y3 5b 4y6xy 7x4(xy) ny yn xy5a5b 24a

10、3b 10ab a2b2 16y2x2 x4yx210xy25y2 x25xy 2x 1 x3x2 9x24 3x23x y24y2 2x3a2b2 7ab25c2d 6cda22a1 a3a26a9 a21 1 116m2 m24m9a 16b6b3 19a318xy9xy 3b 6y8xy 5x7(xy) ay ya xy5a5b 14ab 6ab a2b2 36y2x2 x6yx218xy81y2 x29xy 5x 3 x4x9 16x281 4x95x3 y4y2 9x2ab3 7ab3c2d 2c2da26a9 a3a24a3 a29 1 164m2 m28m9a 16b4b 17a

11、212xy9xy 9a 2y7xy 7x2(xy) ax xa xy3a3b 10ab3 4ab a2b2 49y2x2 x7yx218xy81y2 x29xy 7x 8 x2x9 4x281 2x93x3 y34y 5x3ab3 9ab2c 8cda22a1 a1a24a3 a21 6 964m2 m28m3a 20b8b2 17a38xy5x2y2 5a 6y35xy 5x3(xy) ay ya xy5a5b 10ab2 2ab a2b2 4y2x2 x2yx218xy81y2 x29xy 2x 7 x5x2 25x24 5x27x2 y28y 4xab 3ab2c2d 2cda24a4

12、a3a25a6 a24 1 849m2 m27m9a 18b2b2 19a316x3y9x3y3 9b 4y23xy 7x6(xy) ax xa xy7a7b 24ab3 2ab a2b2 81y2x2 x9yx210xy25y2 x25xy 6x 3 x4x8 16x264 4x85x2 y4y 9x2ab 9ab3c 4c2da26a9 a3a24a3 a29 8 881m2 m29m5a 18b4b 17a310x3y4xy2 7a 4y24xy 3x7(xy) ny yn xy7a7b 30ab 6ab a2b2 49y2x2 x7yx216xy64y2 x28xy 3x 6 x3x9

13、 9x281 3x99x2 y8y3 3x3a3b 9ab28c 2c2da24a4 a1a24a3 a24 6 916m2 m24m5a 12b2b 17a316xy8xy2 7a 8y25xy 3x9(xy) ny yn xy3a3b 4a2b2 6ab a2b2 16y2x2 x4yx24xy4y2 x22xy 4x 2 x5x9 25x281 5x94x y33y 2xab3 9a2b8c2d 2c3da22a1 a3a24a3 a21 7 149m2 m27m3a 14b4b2 11a16x3y5xy 9a 6y29xy 7x6(xy) ny yn xy5a5b 14ab3 8ab

14、a2b2 9y2x2 x3yx26xy9y2 x23xy 5x 1 x3x9 9x281 3x95x y26y 8x2a3b 9a2b28c2d 6c2da22a1 a1a24a3 a21 8 29m2 m23m7a 14b8b2 15a20xy5x3y3 5a 2y9xy 9x5(xy) by yb xy5a5b 4ab3 10ab a2b2 36y2x2 x6yx28xy16y2 x24xy 3x 1 x4x8 16x264 4x88x y7y3 3x2ab 5ab4c3 4c3da22a1 a1a23a2 a21 3 39m2 m23m9a 14b4b3 11a312xy3xy 9a 4

15、y9xy 5x8(xy) by yb xy3a3b 2ab3 10ab a2b2 81y2x2 x9yx212xy36y2 x26xy 7x 5 x2x8 4x264 2x88x3 y7y2 2xab 5a3b36c3d 8cda26a9 a3a26a9 a29 5 925m2 m25m7a 10b4b 11a6xy8xy 9a 4y2xy 9x8(xy) nx xn xy9a9b 2a3b2 8ab a2b2 4y2x2 x2yx28xy16y2 x24xy 8x 7 x2x8 4x264 2x85x3 y4y3 8x3a2b 9a2b38cd 4cda26a9 a2a25a6 a29 4

16、925m2 m25m7a 18b4b3 19a38x2y8x2y3 9a 2y37xy 5x2(xy) ax xa xy3a3b 8ab 8ab a2b2 25y2x2 x5yx218xy81y2 x29xy 8x 5 x3x9 9x281 3x96x3 y5y 3x3a2b3 3ab2cd 4cda22a1 a1a24a3 a21 8 525m2 m25m3a 14b4b 15a4xy6x2y 9b 6y2xy 5x4(xy) ay ya xy9a9b 16ab3 2ab a2b2 81y2x2 x9yx210xy25y2 x25xy 8x 5 x3x1 9x21 3x13x3 y4y 7x3ab2 5a2b23c 2c3da26a9 a2a23a2 a29 1 69m2 m23m3a 12b8b 11a22x3y2xy 3b 2y23xy 7x6(xy) by yb xy3a3b 4a2b2 6ab a2b2 4y2x2 x2yx216xy64y2 x28xy