人教版八年级数学上册分式的乘除法练习题8.doc

1、9(xy) am ma xy5a5b 26a3b3 2ab a2b2 36y2x2 x6yx210xy25y2 x25xy 9x 3 x3x7 9x249 3x74x y5y 8xa3b 9a2b9cd 4cda22a1 a1a23a2 a21 2 881m2 m29m9a 12b6b3 17a210xy8x3y3 3b 4y27xy 5x6(xy) by yb xy5a5b 29a2b3 8ab a2b2 9y2x2 x3yx216xy64y2 x28xy 3x 3 x4x2 16x24 4x22x y33y 5x3a2b3 7ab37c2 4cda22a1 a2a23a2 a21 2 59

2、m2 m23m7a 14b8b2 15a10xy8xy 9a 6y36xy 9x9(xy) by yb xy9a9b 12a3b 2ab a2b2 9y2x2 x3yx24xy4y2 x22xy 4x 3 x5x8 25x264 5x84x y35y 9xa2b 5ab3cd 4c2da26a9 a1a24a3 a29 3 349m2 m27m5a 14b4b 17a14xy5x2y 7a 6y24xy 5x8(xy) nm mn xy3a3b 15a2b 10ab a2b2 36y2x2 x6yx214xy49y2 x27xy 2x 4 x2x5 4x225 2x55x y24y 8xa2b

3、2 5ab27cd 4c2da22a1 a3a25a6 a21 4 84m2 m22m3a 20b8b2 11a6x3y4xy 3b 8y36xy 3x6(xy) ax xa xy9a9b 3ab 2ab a2b2 36y2x2 x6yx212xy36y2 x26xy 7x 2 x2x3 4x29 2x35x3 y6y2 6xa2b3 3a3b28c3 8c2da26a9 a1a24a3 a29 9 236m2 m26m9a 18b4b 13a212xy9xy3 5a 2y9xy 3x2(xy) by yb xy7a7b 22ab 6ab a2b2 16y2x2 x4yx28xy16y2 x2

4、4xy 3x 7 x4x6 16x236 4x66x2 y37y2 9xa3b3 3a2b2c2 8cda26a9 a1a22a1 a29 9 525m2 m25m9a 12b4b3 19a320x3y7x3y2 9a 4y38xy 5x8(xy) am ma xy7a7b 21a3b 10ab a2b2 64y2x2 x8yx24xy4y2 x22xy 6x 1 x5x5 25x225 5x58x2 y37y3 4x3a2b 3ab37c3 6cda26a9 a2a25a6 a29 2 481m2 m29m9a 14b6b 17a24xy9xy3 5b 6y32xy 7x9(xy) by y

5、b xy9a9b 30a3b 8ab a2b2 81y2x2 x9yx28xy16y2 x24xy 3x 8 x4x6 16x236 4x68x3 y27y2 8x2ab 9a3b5c2 6c3da22a1 a3a25a6 a21 1 581m2 m29m9a 16b4b 13a22xy7x3y 3a 6y24xy 3x4(xy) bm mb xy3a3b 30ab2 2ab a2b2 64y2x2 x8yx26xy9y2 x23xy 8x 4 x5x7 25x249 5x77x3 y36y 2xa3b 5ab35c2 6cda26a9 a2a23a2 a29 2 69m2 m23m9a 16

6、b2b3 19a8xy2x2y 9a 2y5xy 5x4(xy) am ma xy7a7b 3a2b3 4ab a2b2 64y2x2 x8yx210xy25y2 x25xy 3x 4 x4x2 16x24 4x26x2 y35y3 8x3a3b 5ab33c2 8cda22a1 a2a23a2 a21 6 825m2 m25m3a 12b4b 19a2x3y6xy2 9a 2y3xy 3x8(xy) ax xa xy7a7b 22ab3 10ab a2b2 64y2x2 x8yx28xy16y2 x24xy 5x 2 x4x7 16x249 4x74x y3y2 8xab3 9ab3cd 8

7、c2da26a9 a3a25a6 a29 1 89m2 m23m9a 18b2b2 13a312xy5x2y3 9b 2y7xy 5x8(xy) ay ya xy3a3b 16a2b 6ab a2b2 9y2x2 x3yx26xy9y2 x23xy 4x 4 x2x8 4x264 2x86x2 y35y3 7x2ab3 3a3b35c3d 2cda22a1 a1a22a1 a21 3 481m2 m29m7a 20b4b3 11a6x3y8x2y2 9b 8y5xy 7x2(xy) ax xa xy9a9b 26a2b2 10ab a2b2 64y2x2 x8yx210xy25y2 x25xy

8、 2x 2 x4x1 16x21 4x17x y28y3 5xab 3a3b9c3 4cda26a9 a2a24a4 a29 7 416m2 m24m5a 10b6b 11a20xy7x3y 5a 2y2xy 5x9(xy) by yb xy3a3b 19ab 6ab a2b2 25y2x2 x5yx218xy81y2 x29xy 6x 5 x5x8 25x264 5x87x y8y 3xa2b 9ab38cd 8cda24a4 a3a25a6 a24 7 381m2 m29m3a 18b2b 17a10x2y6x2y3 7b 4y5xy 7x4(xy) nx xn xy9a9b 22ab 2

9、ab a2b2 49y2x2 x7yx210xy25y2 x25xy 4x 1 x3x2 9x24 3x27x y6y3 4xab2 9ab7c 6cda26a9 a3a24a3 a29 5 649m2 m27m9a 10b8b3 17a214xy2x3y 9a 2y6xy 5x5(xy) nm mn xy7a7b 3a2b2 6ab a2b2 49y2x2 x7yx216xy64y2 x28xy 9x 9 x4x1 16x21 4x15x2 y4y 6x2a2b 5ab23c2d 2cda26a9 a1a22a1 a29 1 34m2 m22m5a 12b8b 13a2x3y2xy 9a 8

10、y37xy 7x7(xy) by yb xy5a5b 30ab 4ab a2b2 4y2x2 x2yx214xy49y2 x27xy 8x 6 x4x6 16x236 4x64x y23y2 7xa2b 9ab9cd 2c3da24a4 a1a22a1 a24 9 436m2 m26m9a 10b4b 15a310x2y4x2y2 5a 4y3xy 7x6(xy) ny yn xy3a3b 15ab2 4ab a2b2 16y2x2 x4yx216xy64y2 x28xy 2x 6 x4x7 16x249 4x78x y7y3 4x3ab3 7a3b39cd 4cda22a1 a3a24a3

11、a21 4 436m2 m26m5a 20b4b 13a18xy9x3y 7b 8y9xy 3x7(xy) am ma xy3a3b 9a2b2 8ab a2b2 36y2x2 x6yx218xy81y2 x29xy 7x 6 x4x1 16x21 4x19x2 y38y 4x3ab3 9a3b33c3d 4cda24a4 a2a23a2 a24 5 264m2 m28m9a 12b4b2 11a12xy6xy3 9b 2y7xy 5x9(xy) am ma xy7a7b 6a2b2 6ab a2b2 9y2x2 x3yx216xy64y2 x28xy 9x 8 x5x1 25x21 5x17

12、x y26y3 4xa2b 9a3b9c2d 8cda24a4 a1a22a1 a24 2 19m2 m23m3a 10b8b2 17a2x2y5x2y3 7b 8y6xy 9x9(xy) bx xb xy5a5b 22a3b 2ab a2b2 25y2x2 x5yx26xy9y2 x23xy 5x 6 x5x1 25x21 5x18x y27y 8x2ab3 9a3b32c 8c3da22a1 a1a23a2 a21 3 79m2 m23m3a 14b8b3 19a12xy8xy3 3b 2y6xy 9x9(xy) am ma xy7a7b 11ab3 6ab a2b2 36y2x2 x6y

13、x212xy36y2 x26xy 7x 5 x5x7 25x249 5x78x y7y2 7x2a2b2 9a3b9cd 6cda22a1 a1a24a3 a21 2 381m2 m29m9a 14b6b2 15a214x3y6x3y3 7a 2y35xy 9x8(xy) ax xa xy9a9b 4a2b2 10ab a2b2 49y2x2 x7yx26xy9y2 x23xy 8x 9 x3x6 9x236 3x69x3 y8y 3x2ab 7a3b25c 8cda26a9 a3a24a3 a29 3 736m2 m26m3a 10b8b3 11a10x3y2xy 9b 2y32xy 7x3

14、(xy) am ma xy3a3b 13ab2 2ab a2b2 4y2x2 x2yx218xy81y2 x29xy 6x 6 x3x3 9x29 3x39x y8y3 7xab2 5a3b8cd 4cda22a1 a3a25a6 a21 7 516m2 m24m3a 14b8b 11a34x2y4xy3 9b 4y23xy 3x8(xy) am ma xy3a3b 18ab 8ab a2b2 16y2x2 x4yx28xy16y2 x24xy 2x 1 x4x4 16x216 4x48x3 y7y 6xab3 5a2b2c2d 6cda22a1 a3a24a3 a21 1 364m2 m28

15、m5a 10b4b3 19a10xy4xy3 9a 8y2xy 3x2(xy) bx xb xy9a9b 3ab 6ab a2b2 36y2x2 x6yx218xy81y2 x29xy 2x 6 x3x8 9x264 3x86x2 y5y2 7x3a2b2 9ab5c3d 2cda22a1 a2a25a6 a21 5 749m2 m27m3a 16b4b 17a2x2y2x3y3 9a 4y29xy 9x6(xy) ny yn xy3a3b 11ab2 8ab a2b2 9y2x2 x3yx28xy16y2 x24xy 6x 2 x2x6 4x236 2x69x3 y8y3 6xab3 7a3

16、b6c2 6c2da24a4 a3a24a3 a24 9 99m2 m23m9a 14b2b 19a12x2y3xy2 9b 2y27xy 9x5(xy) nx xn xy7a7b 7ab 4ab a2b2 49y2x2 x7yx214xy49y2 x27xy 5x 5 x3x8 9x264 3x86x3 y35y 7x3a2b 3a2b24c 4cda22a1 a2a24a4 a21 5 864m2 m28m9a 20b6b 13a312xy8xy3 3b 4y4xy 7x3(xy) nx xn xy7a7b 12a2b3 8ab a2b2 81y2x2 x9yx218xy81y2 x29xy 6x 8 x4x6 16x236 4x66x y7y2 3xab 7a3b39c 2cda26a9 a3a26a9 a29 9 925m2 m25m3a 20b8b 17a16xy3xy 7a 8y36xy 3x4(xy) am ma xy