人教版八年级数学上册分式的乘除法练习题精选12.docx

1、人教版八年级数学上册分式的乘除法练习题精选127x y28y 2xab 9a2b23c3 8cda24a4 a1a24a3 a24 9 681m2 m29m3a 12b2b 15a10xy2x2y3 9b 8y25xy 7x4(xy) ny yn xy3a3b 6a3b3 4ab a2b2 64y2x2 x8yx210xy25y2 x25xy 3x 4 x4x3 16x29 4x37x y6y 6xa3b 5ab29c 6cda24a4 a2a24a4 a24 8 649m2 m27m5a 14b6b3 13a36x2y6x2y 5b 2y29xy 7x9(xy) am ma xy5a5b 1

2、9a2b 4ab a2b2 81y2x2 x9yx218xy81y2 x29xy 8x 2 x2x9 4x281 2x94x3 y25y3 6x2ab2 9ab7c2 8cda24a4 a2a24a4 a24 2 1100m2 m210m9a 12b6b 15a210x2y4x3y2 9b 8y5xy 5x5(xy) ay ya xy9a9b 28ab 2ab a2b2 25y2x2 x5yx212xy36y2 x26xy 2x 4 x2x7 4x249 2x78x y27y3 7xa2b 7a3b2c2 8cda22a1 a2a24a4 a21 2 14m2 m22m3a 18b4b2 13

3、a212x2y6xy 9a 2y24xy 7x6(xy) ny yn xy5a5b 29ab 4ab a2b2 4y2x2 x2yx218xy81y2 x29xy 7x 4 x5x8 25x264 5x88x2 y37y 5xab2 7ab23c2d 2c2da24a4 a2a25a6 a24 6 24m2 m22m3a 16b8b 19a38xy6xy2 9b 8y6xy 3x9(xy) ay ya xy3a3b 25ab 8ab a2b2 81y2x2 x9yx210xy25y2 x25xy 3x 3 x4x2 16x24 4x23x3 y34y2 3xa3b2 9ab7c3 4c2da2

4、4a4 a2a25a6 a24 4 225m2 m25m9a 10b2b 19a12x2y9x2y 7b 8y23xy 9x3(xy) nm mn xy7a7b 26a2b 6ab a2b2 25y2x2 x5yx214xy49y2 x27xy 9x 5 x5x8 25x264 5x85x3 y6y2 4x3a3b 9a3b23cd 6c3da24a4 a1a23a2 a24 6 664m2 m28m9a 10b4b2 17a8x3y3xy 9a 6y8xy 7x6(xy) ax xa xy9a9b 12ab 6ab a2b2 64y2x2 x8yx214xy49y2 x27xy 8x 2 x

5、2x9 4x281 2x96x y27y 2xab3 9a2b8c 4c2da24a4 a3a26a9 a24 3 664m2 m28m5a 16b2b 11a14x3y7x2y 9b 2y4xy 5x9(xy) ax xa xy7a7b 27ab3 2ab a2b2 16y2x2 x4yx28xy16y2 x24xy 8x 5 x3x3 9x29 3x36x y37y 9xa3b2 9ab2c2 8cda22a1 a1a24a3 a21 9 725m2 m25m3a 16b2b3 11a220xy8x2y3 3a 6y2xy 3x3(xy) ay ya xy9a9b 25a2b2 6ab a

6、2b2 16y2x2 x4yx214xy49y2 x27xy 4x 7 x3x5 9x225 3x55x y4y 4xab 9a2b29c3 6c2da24a4 a2a25a6 a24 6 464m2 m28m9a 10b2b 17a14x2y5x2y 7a 2y5xy 9x4(xy) nx xn xy5a5b 2a2b 8ab a2b2 9y2x2 x3yx28xy16y2 x24xy 5x 4 x2x1 4x21 2x17x y28y 7x2a3b 9a3b5c2 4cda22a1 a2a23a2 a21 8 816m2 m24m5a 20b4b2 17a18xy7x3y 5a 8y39x

7、y 9x2(xy) bm mb xy7a7b 28ab 10ab a2b2 81y2x2 x9yx210xy25y2 x25xy 5x 3 x2x4 4x216 2x45x2 y4y 6x3a2b 7ab38c3d 8c2da26a9 a2a24a4 a29 7 79m2 m23m9a 20b2b2 13a4xy7xy3 9a 6y35xy 7x3(xy) nx xn xy3a3b 28ab2 2ab a2b2 81y2x2 x9yx26xy9y2 x23xy 2x 6 x2x4 4x216 2x48x y7y3 4x2a3b 5a3b39c2 4c3da26a9 a1a23a2 a29 9

8、536m2 m26m3a 10b6b2 19a12xy8x3y3 5b 8y36xy 9x7(xy) nm mn xy7a7b 15ab3 8ab a2b2 9y2x2 x3yx212xy36y2 x26xy 8x 2 x4x3 16x29 4x34x2 y3y2 5x2a3b3 7ab26c 6c3da26a9 a3a24a3 a29 8 516m2 m24m9a 14b6b 17a8xy4xy 7b 8y9xy 9x8(xy) am ma xy5a5b 3a3b 8ab a2b2 49y2x2 x7yx212xy36y2 x26xy 9x 6 x2x7 4x249 2x76x y37y3

9、2x3ab3 7a3b38c2d 4cda22a1 a1a23a2 a21 4 236m2 m26m9a 16b6b3 17a20x3y8x3y2 9a 4y2xy 7x4(xy) nx xn xy7a7b 24a2b 6ab a2b2 4y2x2 x2yx28xy16y2 x24xy 7x 6 x3x9 9x281 3x98x3 y37y3 3xa2b 5a2b36cd 6cda26a9 a3a25a6 a29 2 536m2 m26m9a 16b2b 17a34x2y9xy 7a 8y7xy 9x9(xy) ny yn xy7a7b 2a3b 4ab a2b2 4y2x2 x2yx210x

10、y25y2 x25xy 3x 9 x2x7 4x249 2x75x2 y34y 9xa3b 7ab8c3d 2cda26a9 a1a23a2 a29 6 14m2 m22m9a 20b6b3 11a20x3y3xy3 7b 2y22xy 9x7(xy) nx xn xy5a5b 6ab3 8ab a2b2 49y2x2 x7yx216xy64y2 x28xy 4x 1 x2x6 4x236 2x65x y6y 3x3ab 9a2b5cd 8cda22a1 a1a23a2 a21 4 625m2 m25m7a 14b8b3 13a36xy8x3y 9b 6y22xy 3x8(xy) nx xn

11、xy7a7b 9ab2 8ab a2b2 4y2x2 x2yx210xy25y2 x25xy 6x 4 x4x4 16x216 4x44x y3y3 8x3a3b2 5ab6cd 2c3da22a1 a3a25a6 a21 4 916m2 m24m7a 14b6b2 17a18xy3xy2 5b 2y37xy 5x4(xy) am ma xy3a3b 22a3b 6ab a2b2 36y2x2 x6yx24xy4y2 x22xy 6x 4 x2x7 4x249 2x73x y4y 6x2a2b3 5a2b33c3d 2c2da24a4 a1a22a1 a24 4 381m2 m29m3a 12

12、b2b 17a28x2y6xy 7a 4y7xy 7x2(xy) nm mn xy3a3b 10a2b 2ab a2b2 25y2x2 x5yx24xy4y2 x22xy 5x 9 x3x2 9x24 3x26x3 y35y3 9xab 5ab33c 2cda24a4 a1a23a2 a24 1 625m2 m25m7a 10b6b3 11a212xy9x2y 7a 4y32xy 9x9(xy) ax xa xy7a7b 15ab2 2ab a2b2 16y2x2 x4yx218xy81y2 x29xy 6x 6 x4x2 16x24 4x26x y37y2 9x2a3b 7a2b39c2d

13、4c3da22a1 a3a26a9 a21 1 549m2 m27m7a 20b4b3 11a216xy9xy3 7a 6y35xy 3x2(xy) nm mn xy5a5b 29a2b 6ab a2b2 9y2x2 x3yx26xy9y2 x23xy 2x 3 x5x7 25x249 5x73x2 y34y 2x3a3b2 9ab24c2 2cda22a1 a1a22a1 a21 4 636m2 m26m7a 18b2b2 19a10xy6x3y 9a 6y7xy 9x7(xy) ay ya xy5a5b 17a2b 6ab a2b2 81y2x2 x9yx210xy25y2 x25xy 5

14、x 5 x2x2 4x24 2x22x y3y 5xab3 7a2b28c2 6cda22a1 a2a24a4 a21 7 816m2 m24m7a 14b2b 17a316x3y5xy 9b 6y34xy 9x5(xy) am ma xy5a5b 18a3b 6ab a2b2 36y2x2 x6yx24xy4y2 x22xy 6x 8 x4x7 16x249 4x77x3 y8y2 4xab2 5ab22c 6c2da22a1 a3a25a6 a21 3 781m2 m29m3a 20b2b 15a18xy5xy3 5a 8y23xy 3x7(xy) nm mn xy3a3b 24ab3 1

15、0ab a2b2 49y2x2 x7yx210xy25y2 x25xy 6x 1 x2x4 4x216 2x49x y8y 8xa3b 3a3b39c3d 8c2da24a4 a1a23a2 a24 9 381m2 m29m7a 16b8b3 19a218x2y7x3y3 5a 6y8xy 3x2(xy) nm mn xy7a7b 2ab2 10ab a2b2 36y2x2 x6yx212xy36y2 x26xy 7x 2 x5x7 25x249 5x75x3 y36y 8x2a2b2 5ab26cd 4cda24a4 a3a26a9 a24 4 7100m2 m210m9a 10b2b 13

16、a8x3y3xy3 9a 2y4xy 7x3(xy) bx xb xy7a7b 16ab3 4ab a2b2 49y2x2 x7yx212xy36y2 x26xy 3x 6 x5x9 25x281 5x99x y8y3 7x3a3b3 7ab34cd 4c2da24a4 a2a24a4 a24 3 94m2 m22m9a 12b2b3 17a34xy9x2y3 5b 8y7xy 5x6(xy) bm mb xy3a3b 16ab 10ab a2b2 81y2x2 x9yx216xy64y2 x28xy 8x 9 x4x7 16x249 4x76x3 y35y3 3xab3 9a2b28c2 2cda24a4 a1a23a2 a24 1 625m2 m25m5a 14b2b3 11a216x3y4xy 5a 8y9xy 5x9(xy) bm mb xy3a3b 6ab2 2ab a2b2 81y2x2 x9yx28xy16y2 x24xy 7x 5 x3x1 9x21 3x16x3 y37y2 5x3