人教版八年级数学上册分式的乘除法练习题精选58.doc

1、a26a9 a3a26a9 a29 4 236m2 m26m5a 14b6b 17a314x2y5xy 5a 2y26xy 3x9(xy) by yb xy5a5b 24ab 2ab a2b2 81y2x2 x9yx26xy9y2 x23xy 4x 8 x3x4 9x216 3x42x2 y23y2 3xa2b3 7ab39c3 4c2da26a9 a3a26a9 a29 4 316m2 m24m9a 20b2b 15a20xy2xy 5a 6y7xy 9x7(xy) nm mn xy3a3b 21a3b 10ab a2b2 36y2x2 x6yx218xy81y2 x29xy 5x 4 x5

2、x5 25x225 5x54x3 y33y 3xa3b 9ab7c3 2c2da24a4 a2a23a2 a24 7 549m2 m27m9a 12b2b 17a210x2y4x3y 9b 6y2xy 3x2(xy) ny yn xy3a3b 9a2b 4ab a2b2 4y2x2 x2yx24xy4y2 x22xy 7x 4 x2x4 4x216 2x45x y6y2 8x3a2b2 5ab3cd 6cda26a9 a1a24a3 a29 6 425m2 m25m3a 12b8b2 11a38xy9xy 9b 4y37xy 5x9(xy) ax xa xy7a7b 13ab 10ab a2b

3、2 81y2x2 x9yx210xy25y2 x25xy 4x 9 x5x2 25x24 5x26x2 y5y 5xa3b3 3ab28c3 8c2da24a4 a2a24a4 a24 9 49m2 m23m3a 20b6b 17a6x3y9xy 9a 2y22xy 3x6(xy) nx xn xy5a5b 5a3b 4ab a2b2 49y2x2 x7yx210xy25y2 x25xy 7x 8 x5x1 25x21 5x16x3 y35y2 5xa3b 7a3b29c 2cda24a4 a1a22a1 a24 2 464m2 m28m3a 16b6b 17a26x2y6x2y2 9b 8y

4、37xy 5x7(xy) nx xn xy3a3b 26a3b 8ab a2b2 64y2x2 x8yx216xy64y2 x28xy 3x 3 x2x4 4x216 2x47x2 y6y2 8x3a3b 7a3b24c3 4c3da26a9 a1a22a1 a29 4 349m2 m27m3a 12b8b 17a310xy8x2y 5a 8y38xy 9x8(xy) nm mn xy7a7b 24ab 10ab a2b2 9y2x2 x3yx210xy25y2 x25xy 8x 4 x2x7 4x249 2x76x y35y3 2xa2b2 7a2b4c2d 4c2da24a4 a3a24a

5、3 a24 6 725m2 m25m9a 16b4b 13a8xy5x2y2 3a 8y24xy 7x2(xy) am ma xy9a9b 20a3b3 4ab a2b2 81y2x2 x9yx214xy49y2 x27xy 2x 5 x5x5 25x225 5x59x y8y3 6xa3b2 5a2b25c3d 2cda22a1 a2a23a2 a21 2 49m2 m23m7a 14b8b 15a10xy6xy3 7a 8y33xy 5x7(xy) nm mn xy5a5b 22ab2 10ab a2b2 81y2x2 x9yx214xy49y2 x27xy 9x 4 x2x9 4x281

6、 2x95x3 y4y3 7x3ab 3ab8cd 8cda22a1 a1a24a3 a21 1 849m2 m27m3a 10b4b 17a28xy4xy 3b 4y29xy 7x7(xy) by yb xy9a9b 23ab 8ab a2b2 64y2x2 x8yx214xy49y2 x27xy 7x 2 x4x5 16x225 4x57x3 y38y2 3x2a2b3 7ab36c3d 8c2da22a1 a3a25a6 a21 1 325m2 m25m7a 12b2b3 19a24x2y4xy3 3a 8y7xy 9x3(xy) ny yn xy5a5b 19a2b 2ab a2b2

7、64y2x2 x8yx218xy81y2 x29xy 8x 8 x3x5 9x225 3x55x y4y 7xa2b3 9ab5c3 2c3da26a9 a3a25a6 a29 4 781m2 m29m3a 20b2b2 17a18xy6xy 9a 6y8xy 5x2(xy) nx xn xy5a5b 21ab2 4ab a2b2 9y2x2 x3yx214xy49y2 x27xy 7x 7 x4x4 16x216 4x43x3 y34y2 6xab 7ab23c3d 8cda22a1 a2a24a4 a21 9 549m2 m27m5a 18b6b3 13a316xy4x2y 9b 2y37

8、xy 3x6(xy) nm mn xy3a3b 5ab2 6ab a2b2 36y2x2 x6yx214xy49y2 x27xy 6x 4 x3x9 9x281 3x99x y28y 7xa3b 9ab36c 2c3da22a1 a1a23a2 a21 7 564m2 m28m5a 12b4b2 11a212x3y5x2y2 3b 6y35xy 5x5(xy) nx xn xy5a5b 27ab2 4ab a2b2 64y2x2 x8yx28xy16y2 x24xy 6x 2 x4x6 16x236 4x65x3 y34y2 9x3a2b2 9a2b8cd 8c3da24a4 a3a24a3

9、a24 4 236m2 m26m3a 18b2b2 19a34xy6xy3 9a 2y25xy 7x4(xy) by yb xy3a3b 13a2b 6ab a2b2 25y2x2 x5yx216xy64y2 x28xy 7x 1 x4x5 16x225 4x55x2 y6y 7xab 5a2b8cd 4cda22a1 a1a24a3 a21 4 8100m2 m210m5a 12b6b 17a38x2y9x2y 3b 6y9xy 3x2(xy) nx xn xy7a7b 14ab 6ab a2b2 16y2x2 x4yx28xy16y2 x24xy 8x 3 x2x5 4x225 2x54x

10、3 y35y3 7xa2b 5ab4cd 8cda26a9 a3a25a6 a29 3 136m2 m26m5a 20b6b 19a316x2y4x3y3 7b 6y32xy 9x7(xy) ay ya xy9a9b 12a3b 4ab a2b2 49y2x2 x7yx26xy9y2 x23xy 7x 3 x2x6 4x236 2x69x y28y3 7x2a2b 9ab4cd 4cda24a4 a3a25a6 a24 8 481m2 m29m5a 12b4b 17a10x3y2x2y3 5b 4y24xy 3x6(xy) bx xb xy7a7b 29ab2 4ab a2b2 64y2x2

11、x8yx28xy16y2 x24xy 6x 7 x4x2 16x24 4x22x3 y3y2 7xab 5ab6c 4cda22a1 a3a25a6 a21 2 59m2 m23m7a 16b6b 17a24xy6x3y 5b 8y3xy 5x6(xy) bm mb xy3a3b 17a3b3 8ab a2b2 81y2x2 x9yx210xy25y2 x25xy 7x 6 x4x4 16x216 4x45x3 y36y2 7xab2 3a3b5c 8cda24a4 a3a24a3 a24 6 364m2 m28m7a 18b4b2 17a318x2y7x3y 7a 6y3xy 7x8(xy)

12、 am ma xy9a9b 6ab 2ab a2b2 49y2x2 x7yx218xy81y2 x29xy 5x 7 x3x5 9x225 3x54x y33y 5x3ab 3ab8c 4cda22a1 a2a24a4 a21 9 849m2 m27m7a 20b8b 15a16xy5xy3 7a 6y6xy 7x3(xy) nx xn xy9a9b 22ab 10ab a2b2 9y2x2 x3yx218xy81y2 x29xy 6x 8 x3x1 9x21 3x14x2 y3y 4x3ab3 9ab24cd 2cda24a4 a2a23a2 a24 5 44m2 m22m5a 14b4b2

13、 19a16xy2xy 7a 2y8xy 9x9(xy) bm mb xy5a5b 24a3b2 4ab a2b2 64y2x2 x8yx26xy9y2 x23xy 2x 2 x5x1 25x21 5x16x y5y2 9x3ab 3ab6cd 2c2da22a1 a3a24a3 a21 4 54m2 m22m3a 18b6b3 13a2xy4xy 5a 8y4xy 7x8(xy) ny yn xy9a9b 29a2b3 8ab a2b2 25y2x2 x5yx26xy9y2 x23xy 7x 3 x2x1 4x21 2x15x3 y4y 8xa2b2 7a2b27c3 6c2da24a4 a

14、2a25a6 a24 9 436m2 m26m9a 10b2b2 11a8x3y7xy2 7b 2y26xy 9x3(xy) bm mb xy3a3b 19ab2 10ab a2b2 64y2x2 x8yx212xy36y2 x26xy 6x 7 x4x2 16x24 4x25x y36y 7x2a2b 3a3b29c 2c3da26a9 a2a24a4 a29 6 9100m2 m210m5a 14b2b3 13a6x3y4x2y2 7b 2y7xy 9x4(xy) am ma xy5a5b 7ab 4ab a2b2 81y2x2 x9yx216xy64y2 x28xy 3x 2 x3x3

15、9x29 3x36x3 y35y3 6xa3b2 5a2b5cd 4cda26a9 a2a25a6 a29 5 281m2 m29m3a 16b6b 19a210x2y3x3y 3b 4y2xy 5x8(xy) am ma xy9a9b 6a2b 6ab a2b2 25y2x2 x5yx214xy49y2 x27xy 9x 8 x3x3 9x29 3x39x3 y38y2 4xa2b3 3ab38cd 4cda24a4 a3a24a3 a24 1 9100m2 m210m3a 18b8b3 15a212x2y6xy 9b 2y29xy 7x9(xy) nm mn xy3a3b 9a3b2 4a

16、b a2b2 64y2x2 x8yx214xy49y2 x27xy 4x 9 x2x5 4x225 2x52x y3y 8xa2b 7a3b2c3 2cda22a1 a3a24a3 a21 9 649m2 m27m9a 10b4b3 19a8x3y7xy3 5a 6y32xy 5x8(xy) bx xb xy5a5b 25a3b 10ab a2b2 4y2x2 x2yx210xy25y2 x25xy 2x 8 x3x4 9x216 3x48x y27y 4x3a3b3 7a3b2c 8c2da22a1 a3a26a9 a21 8 149m2 m27m9a 18b8b3 13a210x3y3x3y 9a 6y26xy 3x8(xy) bx xb xy9a9b 28ab 4ab a2b2 36y2x2 x6yx216xy64y2 x28xy 3x 2 x3x2 9x24 3x22x y33y 3x3ab 3a3b2c2 8cda22a1 a3a24a3 a21