人教版初二数学上册分式的乘除法练习题精选18.docx

1、人教版初二数学上册分式的乘除法练习题精选187a7b 29a2b 8ab a2b2 25y2x2 x5yx28xy16y2 x24xy 6x 8 x2x1 4x21 2x14x3 y5y3 5xab2 7ab9c3 2c2da26a9 a2a25a6 a29 5 581m2 m29m3a 20b2b2 13a2x3y3x2y 5b 2y4xy 9x3(xy) nm mn xy9a9b 17ab 4ab a2b2 36y2x2 x6yx28xy16y2 x24xy 4x 7 x2x7 4x249 2x75x y4y 2x2a3b 7ab2c3d 6c2da24a4 a1a23a2 a24 6 2

2、4m2 m22m9a 20b2b 15a32xy9xy 5b 8y8xy 9x4(xy) nx xn xy9a9b 2ab2 10ab a2b2 4y2x2 x2yx28xy16y2 x24xy 8x 6 x5x4 25x216 5x45x2 y4y 7xa3b 5a3b26c2d 4c3da22a1 a2a24a4 a21 7 336m2 m26m9a 20b6b 13a4xy4x2y 3a 2y25xy 3x2(xy) ax xa xy9a9b 28ab2 2ab a2b2 9y2x2 x3yx28xy16y2 x24xy 5x 9 x3x2 9x24 3x27x3 y6y 2xa3b3

3、3ab9c 8cda24a4 a1a23a2 a24 4 516m2 m24m5a 20b4b2 17a12xy5x3y 5b 4y3xy 3x4(xy) ay ya xy5a5b 14ab 8ab a2b2 36y2x2 x6yx212xy36y2 x26xy 3x 4 x2x1 4x21 2x18x y27y 5xab 7a2b8c3d 6c3da26a9 a2a25a6 a29 5 436m2 m26m7a 20b6b3 19a320xy5xy 7a 6y27xy 5x5(xy) by yb xy9a9b 22a3b3 8ab a2b2 9y2x2 x3yx212xy36y2 x26xy

4、 9x 2 x4x5 16x225 4x59x y8y 2xa3b2 9ab29c3d 4c3da24a4 a3a26a9 a24 1 425m2 m25m9a 12b4b 17a26x2y5x2y 7b 4y7xy 7x4(xy) ax xa xy9a9b 21ab3 10ab a2b2 36y2x2 x6yx24xy4y2 x22xy 6x 9 x3x6 9x236 3x64x y3y2 7xa3b3 3ab34cd 2c2da26a9 a1a22a1 a29 1 564m2 m28m7a 20b4b3 19a36x3y3x2y 3b 2y8xy 5x7(xy) nm mn xy5a5b

5、14a3b 4ab a2b2 81y2x2 x9yx216xy64y2 x28xy 4x 5 x3x8 9x264 3x88x3 y7y2 7xab 7a2b6c 4c3da22a1 a1a23a2 a21 5 325m2 m25m5a 14b2b3 17a212xy5xy 7b 4y3xy 7x5(xy) ny yn xy3a3b 5ab3 4ab a2b2 4y2x2 x2yx210xy25y2 x25xy 5x 8 x4x8 16x264 4x83x y24y2 8x2ab2 3a2b23c2d 2cda22a1 a3a25a6 a21 4 149m2 m27m7a 16b4b 11a3

6、12x3y9xy2 9a 2y2xy 7x8(xy) ax xa xy3a3b 28ab3 10ab a2b2 49y2x2 x7yx210xy25y2 x25xy 4x 7 x5x2 25x24 5x24x y5y3 5xab 3a2b3c3 8c3da22a1 a3a26a9 a21 9 564m2 m28m7a 14b4b 11a20xy2x3y3 3a 2y6xy 7x2(xy) ay ya xy9a9b 14ab 10ab a2b2 16y2x2 x4yx216xy64y2 x28xy 3x 8 x2x3 4x29 2x36x y25y3 8xa2b 7ab6c2d 4c3da26a

7、9 a3a26a9 a29 7 14m2 m22m7a 10b4b 13a218x3y9x2y3 9a 8y8xy 3x7(xy) am ma xy7a7b 4ab3 4ab a2b2 36y2x2 x6yx212xy36y2 x26xy 6x 6 x3x7 9x249 3x75x2 y4y2 4xa3b3 7a3b2c2 4cda24a4 a1a23a2 a24 2 636m2 m26m3a 18b2b2 13a10xy3x3y3 7a 4y6xy 7x5(xy) by yb xy9a9b 20ab2 2ab a2b2 4y2x2 x2yx26xy9y2 x23xy 7x 2 x5x2 25

8、x24 5x24x y3y 2x3ab 7ab8cd 2c2da26a9 a2a23a2 a29 4 349m2 m27m7a 12b6b 15a38xy6x3y 7b 8y5xy 3x4(xy) am ma xy7a7b 9ab 6ab a2b2 81y2x2 x9yx214xy49y2 x27xy 5x 6 x4x2 16x24 4x29x2 y28y 8x2a2b 9a3b2c 6c2da24a4 a3a26a9 a24 1 764m2 m28m9a 12b8b 13a312xy5xy3 9a 6y35xy 9x8(xy) bm mb xy3a3b 24ab2 8ab a2b2 4y2x

9、2 x2yx26xy9y2 x23xy 8x 7 x3x7 9x249 3x76x2 y27y3 8xa3b2 5a3b39c3 6cda24a4 a3a24a3 a24 8 825m2 m25m3a 10b8b2 13a16xy3x2y 7b 8y26xy 9x8(xy) nm mn xy7a7b 15a2b3 10ab a2b2 25y2x2 x5yx218xy81y2 x29xy 3x 2 x5x2 25x24 5x24x y5y 7xab 5a3b36c 6c3da22a1 a3a25a6 a21 5 325m2 m25m3a 12b4b2 19a310x3y9x2y3 5a 4y28

10、xy 7x2(xy) bx xb xy7a7b 11ab 2ab a2b2 36y2x2 x6yx218xy81y2 x29xy 7x 6 x4x3 16x29 4x34x3 y5y 3x2a3b 9a3b3cd 2cda22a1 a3a24a3 a21 3 664m2 m28m7a 20b8b 19a34x2y6xy 9a 2y6xy 9x7(xy) nm mn xy9a9b 3ab 8ab a2b2 4y2x2 x2yx216xy64y2 x28xy 3x 7 x4x5 16x225 4x52x y33y2 4x2ab3 5a2b4c2d 6cda24a4 a2a24a4 a24 2 34

11、9m2 m27m9a 18b6b 15a28x3y6xy 3a 4y8xy 9x7(xy) nm mn xy9a9b 20ab 4ab a2b2 81y2x2 x9yx216xy64y2 x28xy 3x 1 x2x2 4x24 2x25x2 y24y 8x2ab2 5a3b9c3d 4cda22a1 a3a24a3 a21 4 281m2 m29m5a 10b6b2 17a14x2y7x2y2 9a 2y29xy 3x2(xy) nx xn xy9a9b 7a2b 4ab a2b2 9y2x2 x3yx210xy25y2 x25xy 9x 1 x2x8 4x264 2x88x y7y2 4x

12、ab 7ab32c2 2cda24a4 a3a26a9 a24 7 7100m2 m210m7a 12b2b 11a32x3y2x3y 5a 8y25xy 5x3(xy) bm mb xy5a5b 13a2b3 6ab a2b2 64y2x2 x8yx210xy25y2 x25xy 2x 9 x4x1 16x21 4x18x3 y27y2 7xab2 7a2b36c2d 8c2da26a9 a1a24a3 a29 2 44m2 m22m7a 18b4b3 13a12x2y4x2y 7b 4y35xy 7x6(xy) bm mb xy3a3b 24a3b2 4ab a2b2 9y2x2 x3yx

13、28xy16y2 x24xy 6x 5 x2x2 4x24 2x28x3 y27y3 4xa2b 7a2b7c2 8c2da22a1 a1a23a2 a21 5 881m2 m29m5a 10b6b 17a320xy5x2y 7b 6y2xy 3x3(xy) bx xb xy3a3b 13a3b2 2ab a2b2 64y2x2 x8yx218xy81y2 x29xy 6x 6 x2x2 4x24 2x24x2 y5y3 9x2ab 7a2b26cd 2c3da26a9 a3a26a9 a29 9 464m2 m28m9a 20b2b3 11a8x2y9x3y2 9b 4y9xy 7x6(xy

14、) nm mn xy7a7b 21a3b3 10ab a2b2 49y2x2 x7yx210xy25y2 x25xy 6x 4 x5x5 25x225 5x56x y7y 8x3ab2 9a2b28c3 4cda22a1 a3a24a3 a21 1 24m2 m22m3a 12b4b 11a216x2y4x2y 5b 8y5xy 9x9(xy) bm mb xy5a5b 12ab 10ab a2b2 25y2x2 x5yx214xy49y2 x27xy 6x 7 x2x3 4x29 2x39x y8y2 9xa2b2 3ab36c 6c3da22a1 a2a24a4 a21 3 616m2 m

15、24m5a 20b4b 13a314xy5xy3 9a 2y26xy 3x5(xy) bx xb xy7a7b 18a3b 8ab a2b2 4y2x2 x2yx216xy64y2 x28xy 6x 6 x5x1 25x21 5x15x y6y 4x2a2b2 5a3b22cd 6c2da24a4 a2a24a4 a24 1 125m2 m25m7a 20b2b 17a214xy4x3y2 3a 6y3xy 7x9(xy) nx xn xy7a7b 24a3b2 4ab a2b2 81y2x2 x9yx210xy25y2 x25xy 3x 7 x2x8 4x264 2x84x3 y23y 5x

16、3a3b 9a3b29c 8cda26a9 a2a23a2 a29 2 125m2 m25m9a 18b2b3 17a8xy7x3y 3b 4y22xy 7x3(xy) bx xb xy5a5b 16a3b2 8ab a2b2 16y2x2 x4yx218xy81y2 x29xy 2x 7 x2x1 4x21 2x16x3 y7y 6x2ab 7a2b26cd 8cda26a9 a2a23a2 a29 8 89m2 m23m3a 20b8b2 13a320xy4xy 7b 4y24xy 5x3(xy) nx xn xy5a5b 20ab 8ab a2b2 81y2x2 x9yx210xy25y2 x25xy 2x 4 x5x7 25x249 5x74x y5y 8xa2b 3ab24c3d 6c3da22a1 a1a23a2 a21 9 24m2 m22m7a 18b2b3 15a210x3y3x2y2 3b 2y4xy 3x9(xy) bm mb xy5a5b 11a2b2 6ab a2b2 49y2x2 x7y