人教版八年级数学上册分式的乘除法练习题精选22.docx

1、人教版八年级数学上册分式的乘除法练习题精选224x 3 x3x1 9x21 3x14x2 y5y3 6xab2 7ab22c2 2c2da22a1 a1a22a1 a21 2 816m2 m24m5a 20b2b2 11a316xy3x3y3 5b 4y22xy 5x4(xy) ny yn xy9a9b 11a3b2 6ab a2b2 9y2x2 x3yx28xy16y2 x24xy 4x 3 x5x8 25x264 5x87x y6y 3x3a3b3 5ab23c 2cda26a9 a2a23a2 a29 7 64m2 m22m5a 10b4b3 15a12xy8xy3 5a 8y2xy 7

2、x5(xy) by yb xy3a3b 11ab2 10ab a2b2 4y2x2 x2yx26xy9y2 x23xy 4x 4 x4x2 16x24 4x24x y3y3 3x2a3b3 3ab32c 2cda22a1 a3a26a9 a21 8 325m2 m25m3a 10b6b 11a12xy6xy 5a 4y2xy 3x3(xy) am ma xy3a3b 7a2b 6ab a2b2 4y2x2 x2yx26xy9y2 x23xy 4x 4 x2x3 4x29 2x34x2 y35y 9x3a3b2 5a2b22cd 8cda22a1 a3a25a6 a21 6 6100m2 m21

3、0m3a 10b6b 11a312x3y6xy 5a 2y8xy 9x6(xy) bm mb xy9a9b 24a2b 10ab a2b2 16y2x2 x4yx214xy49y2 x27xy 7x 7 x5x5 25x225 5x54x2 y3y 7x2ab 3a2b32cd 6cda24a4 a2a25a6 a24 1 249m2 m27m5a 18b6b 17a24xy7x3y2 7b 8y35xy 5x7(xy) ay ya xy9a9b 21a3b2 8ab a2b2 49y2x2 x7yx216xy64y2 x28xy 3x 7 x2x3 4x29 2x37x y38y 5xa3b

4、2 7ab37c 2cda22a1 a1a23a2 a21 1 24m2 m22m3a 14b2b 13a314xy9xy 3b 2y37xy 7x6(xy) by yb xy5a5b 17a2b2 4ab a2b2 9y2x2 x3yx216xy64y2 x28xy 6x 7 x5x6 25x236 5x69x2 y28y2 6x3a3b 9a3b8c3 2c2da26a9 a2a25a6 a29 1 7100m2 m210m9a 18b4b 19a18x3y2x3y 9a 6y39xy 9x6(xy) nm mn xy5a5b 25a2b3 4ab a2b2 64y2x2 x8yx216x

5、y64y2 x28xy 2x 5 x4x8 16x264 4x84x3 y5y3 5xab 3ab4c3 4cda22a1 a1a23a2 a21 9 616m2 m24m9a 10b8b3 13a10xy5xy3 9b 2y27xy 5x9(xy) bm mb xy9a9b 22ab 10ab a2b2 36y2x2 x6yx24xy4y2 x22xy 7x 6 x5x6 25x236 5x62x y3y 7x2ab 9a2b37c2 6cda24a4 a1a23a2 a24 6 916m2 m24m9a 10b6b 11a36xy7x3y3 7a 6y33xy 5x8(xy) bx xb

6、xy3a3b 11a2b3 8ab a2b2 81y2x2 x9yx24xy4y2 x22xy 6x 7 x3x6 9x236 3x69x y8y 8x3ab 9ab8c3d 2c2da24a4 a2a25a6 a24 8 625m2 m25m9a 20b8b 11a20xy4x2y 9a 6y4xy 5x2(xy) by yb xy5a5b 23a3b 8ab a2b2 25y2x2 x5yx210xy25y2 x25xy 9x 8 x2x4 4x216 2x43x2 y4y 6x2a2b2 9a2b33cd 4cda22a1 a2a25a6 a21 3 864m2 m28m7a 12b4b

7、2 11a34x3y9x2y 3b 8y5xy 9x2(xy) bx xb xy9a9b 30a3b 10ab a2b2 25y2x2 x5yx24xy4y2 x22xy 7x 1 x5x5 25x225 5x57x2 y6y3 4x2a2b 7ab9c3d 8c3da22a1 a1a22a1 a21 5 164m2 m28m9a 16b6b 17a18x2y3x2y2 3a 8y3xy 3x3(xy) ny yn xy9a9b 20a2b3 4ab a2b2 64y2x2 x8yx218xy81y2 x29xy 8x 9 x4x2 16x24 4x24x2 y25y2 2xab3 5a2b3

8、6c2d 4c3da22a1 a1a23a2 a21 3 89m2 m23m7a 10b2b 13a6x3y4xy 5a 6y37xy 3x7(xy) bx xb xy3a3b 27a2b2 6ab a2b2 36y2x2 x6yx212xy36y2 x26xy 3x 8 x3x7 9x249 3x77x2 y26y 2x2ab 5ab3c3d 6cda22a1 a1a24a3 a21 6 449m2 m27m3a 14b4b 11a16xy9x3y3 9a 2y36xy 7x9(xy) by yb xy3a3b 20a3b 8ab a2b2 64y2x2 x8yx28xy16y2 x24xy

9、 9x 2 x4x4 16x216 4x43x3 y24y3 8x2ab 5ab7c 2c3da26a9 a1a24a3 a29 6 925m2 m25m7a 10b2b 15a28xy4x2y3 7a 6y4xy 7x4(xy) bx xb xy9a9b 22ab 10ab a2b2 36y2x2 x6yx214xy49y2 x27xy 3x 8 x2x3 4x29 2x35x2 y4y 7x2a3b2 9ab6cd 8cda22a1 a2a25a6 a21 6 44m2 m22m3a 14b8b 19a34x2y9xy 3a 8y3xy 7x2(xy) nx xn xy5a5b 21a3b

10、2 8ab a2b2 16y2x2 x4yx24xy4y2 x22xy 9x 6 x4x8 16x264 4x87x y36y3 6xa2b2 9ab7c3d 4c2da26a9 a2a23a2 a29 6 4100m2 m210m7a 20b4b 13a6xy5xy3 3a 4y2xy 9x3(xy) nx xn xy7a7b 3ab2 2ab a2b2 25y2x2 x5yx218xy81y2 x29xy 4x 3 x4x4 16x216 4x49x3 y8y3 6x2a2b 9a3b25c2d 6c2da24a4 a3a24a3 a24 4 64m2 m22m9a 18b4b 13a16

11、x2y2x3y3 9a 2y7xy 7x6(xy) ny yn xy5a5b 26a3b2 8ab a2b2 81y2x2 x9yx26xy9y2 x23xy 4x 5 x3x8 9x264 3x87x y36y2 3x2ab 9a3b8c3d 8c3da22a1 a3a24a3 a21 9 14m2 m22m3a 10b8b3 15a210x3y7x2y 7a 8y36xy 9x6(xy) bm mb xy3a3b 20ab 10ab a2b2 64y2x2 x8yx214xy49y2 x27xy 5x 5 x5x6 25x236 5x67x y28y 3x3ab 7a2b5c 2c2da2

12、6a9 a1a24a3 a29 9 281m2 m29m9a 16b8b 11a38x2y6xy 3a 6y5xy 7x9(xy) bx xb xy3a3b 21ab2 10ab a2b2 25y2x2 x5yx218xy81y2 x29xy 5x 3 x4x7 16x249 4x77x y8y3 2x2a3b2 7a2b36c3d 8cda24a4 a2a23a2 a24 4 416m2 m24m5a 10b2b2 13a214x2y6xy3 9a 8y38xy 7x5(xy) bm mb xy3a3b 5ab 2ab a2b2 49y2x2 x7yx218xy81y2 x29xy 7x 6

13、 x2x8 4x264 2x87x2 y36y3 9x2ab3 9a3b6c3 2cda24a4 a2a25a6 a24 1 816m2 m24m5a 12b6b3 13a26xy5x3y 3b 8y2xy 5x3(xy) nx xn xy9a9b 13a3b 6ab a2b2 64y2x2 x8yx24xy4y2 x22xy 6x 2 x4x1 16x21 4x13x y24y3 4x3ab2 9ab29c2d 2c3da26a9 a2a24a4 a29 9 649m2 m27m7a 14b6b 19a218xy9x3y 7b 8y32xy 7x7(xy) bm mb xy3a3b 9a2b

14、2 4ab a2b2 49y2x2 x7yx24xy4y2 x22xy 5x 7 x4x2 16x24 4x27x y8y 8xab 7a2b9c3 6c3da26a9 a1a23a2 a29 6 949m2 m27m5a 12b8b3 13a2xy2xy2 9b 2y9xy 3x7(xy) ax xa xy3a3b 14ab3 6ab a2b2 36y2x2 x6yx28xy16y2 x24xy 7x 2 x2x3 4x29 2x34x2 y33y 5x3a2b3 7ab3c 2cda24a4 a3a25a6 a24 4 99m2 m23m5a 14b6b2 13a318xy7xy 3b 6

15、y35xy 3x2(xy) nm mn xy7a7b 11ab3 2ab a2b2 25y2x2 x5yx216xy64y2 x28xy 6x 8 x4x3 16x29 4x33x y24y3 7x2ab3 7ab2cd 4cda22a1 a1a23a2 a21 9 436m2 m26m5a 12b4b 15a6x2y3x2y2 3a 2y3xy 9x7(xy) bm mb xy7a7b 12ab2 6ab a2b2 49y2x2 x7yx24xy4y2 x22xy 8x 3 x5x1 25x21 5x12x y3y3 9xa2b2 9a2b27c3d 2c3da24a4 a2a24a4 a2

16、4 8 79m2 m23m3a 18b4b 19a312xy5xy 3b 6y6xy 5x6(xy) ax xa xy5a5b 11ab 2ab a2b2 25y2x2 x5yx210xy25y2 x25xy 3x 9 x3x3 9x29 3x35x y24y 4x2ab2 7ab29c2d 6c3da22a1 a2a23a2 a21 2 125m2 m25m9a 20b8b3 19a210xy5xy3 3a 6y26xy 3x8(xy) ax xa xy7a7b 30a3b3 6ab a2b2 25y2x2 x5yx28xy16y2 x24xy 7x 2 x3x7 9x249 3x75x y34y 6xab3 9ab7cd 4c3da24a4 a1a23a2 a24 2 616m2 m24m3a 18b2b3 19a22xy2xy2 9b 8y4xy 3x3(xy) ny yn xy5a5b 15ab 6ab a2b2 9y2x2 x3yx210xy25y2 x25xy 2x 6 x4x4 16x216 4x4