人教版八年级数学上册分式的乘除法练习题精选47.docx

1、人教版八年级数学上册分式的乘除法练习题精选47a24a4 a2a24a4 a24 7 74m2 m22m3a 20b8b 15a310x3y6x3y 9b 2y28xy 9x2(xy) am ma xy3a3b 9a2b 8ab a2b2 36y2x2 x6yx28xy16y2 x24xy 5x 1 x5x8 25x264 5x86x3 y37y3 5x2ab 5a2b6c3 8c2da24a4 a3a26a9 a24 1 749m2 m27m5a 16b8b2 17a214x3y9xy 9b 6y35xy 3x3(xy) by yb xy7a7b 29a3b2 2ab a2b2 64y2x2

2、 x8yx210xy25y2 x25xy 7x 2 x2x9 4x281 2x96x y37y3 9x2a3b2 5ab7c 6c3da24a4 a1a24a3 a24 2 1100m2 m210m9a 10b2b2 11a8xy6x3y2 5b 6y25xy 3x3(xy) ax xa xy3a3b 21a3b2 4ab a2b2 36y2x2 x6yx216xy64y2 x28xy 4x 2 x5x1 25x21 5x13x y34y 8xa3b 3a3b39cd 2cda24a4 a2a23a2 a24 9 564m2 m28m7a 16b6b 13a6xy5x2y2 5b 4y7xy

3、7x7(xy) am ma xy5a5b 30a2b 10ab a2b2 25y2x2 x5yx218xy81y2 x29xy 5x 3 x4x7 16x249 4x74x y25y 2x3a3b 7a3b9c 8cda22a1 a2a25a6 a21 4 19m2 m23m3a 16b2b 19a214xy3x2y3 3b 4y38xy 7x5(xy) bm mb xy5a5b 7a3b 10ab a2b2 4y2x2 x2yx28xy16y2 x24xy 5x 6 x2x5 4x225 2x52x y33y2 7x3a2b3 3a2b37c2d 2cda22a1 a3a24a3 a21 9

4、 681m2 m29m7a 10b8b2 13a8x2y6x2y 7b 8y6xy 3x4(xy) ny yn xy7a7b 8a2b3 2ab a2b2 16y2x2 x4yx218xy81y2 x29xy 9x 5 x3x3 9x29 3x37x3 y26y3 3xab 7a2b8c 8c3da22a1 a2a25a6 a21 8 336m2 m26m5a 20b8b3 19a2x2y5x2y 3a 4y5xy 7x8(xy) nm mn xy3a3b 4ab 8ab a2b2 64y2x2 x8yx210xy25y2 x25xy 6x 1 x3x7 9x249 3x75x y4y3 5x

5、3ab3 9ab9c2 4cda22a1 a3a24a3 a21 4 581m2 m29m7a 14b2b 15a8xy3x2y 7a 8y7xy 9x6(xy) ay ya xy3a3b 29a3b3 2ab a2b2 9y2x2 x3yx28xy16y2 x24xy 5x 9 x3x5 9x225 3x52x3 y23y2 2x3a2b 9ab2c2 8cda24a4 a3a24a3 a24 5 625m2 m25m3a 12b4b3 17a314x3y8x3y 5a 2y9xy 3x8(xy) am ma xy3a3b 21ab 4ab a2b2 49y2x2 x7yx210xy25y2

6、 x25xy 6x 2 x3x9 9x281 3x96x y7y 5xab 9ab3c3 6cda24a4 a2a23a2 a24 5 69m2 m23m3a 14b6b 17a16x3y3x2y 3b 6y35xy 7x6(xy) bx xb xy7a7b 10a2b2 2ab a2b2 16y2x2 x4yx218xy81y2 x29xy 4x 5 x5x8 25x264 5x83x3 y34y3 3x2ab 7ab8c3d 2cda22a1 a3a25a6 a21 5 19m2 m23m3a 20b2b3 15a20x2y9xy 3b 8y39xy 9x7(xy) ny yn xy3a3

7、b 26ab2 8ab a2b2 9y2x2 x3yx210xy25y2 x25xy 8x 4 x2x3 4x29 2x34x3 y3y3 7x3a2b 7a3b38c2d 4c2da26a9 a3a25a6 a29 3 225m2 m25m7a 18b4b 17a4x3y9x2y 3b 6y4xy 9x2(xy) ax xa xy5a5b 5ab 8ab a2b2 9y2x2 x3yx216xy64y2 x28xy 4x 7 x4x3 16x29 4x36x3 y27y 7x3ab 5ab5cd 2c3da22a1 a1a23a2 a21 5 34m2 m22m7a 16b4b 19a8xy

8、9xy 9b 8y5xy 9x6(xy) bx xb xy5a5b 14a3b 10ab a2b2 81y2x2 x9yx214xy49y2 x27xy 4x 5 x2x1 4x21 2x15x y34y2 7x2a2b3 5ab34c2 2c2da24a4 a1a24a3 a24 1 949m2 m27m7a 16b4b 11a38xy3xy2 9b 2y37xy 5x9(xy) by yb xy5a5b 26a3b 6ab a2b2 49y2x2 x7yx218xy81y2 x29xy 5x 7 x4x9 16x281 4x94x y5y 6xa2b2 5a2b32c2d 8c2da24a

9、4 a3a26a9 a24 2 536m2 m26m3a 12b4b 15a6x3y6xy 7a 6y4xy 3x5(xy) bm mb xy5a5b 19ab3 2ab a2b2 9y2x2 x3yx26xy9y2 x23xy 4x 2 x5x7 25x249 5x79x y28y 6x3ab2 9a3b8cd 6cda22a1 a3a26a9 a21 8 549m2 m27m5a 16b2b3 19a20x2y3xy 3b 8y7xy 7x4(xy) ay ya xy9a9b 10a3b 10ab a2b2 64y2x2 x8yx216xy64y2 x28xy 6x 5 x3x5 9x22

10、5 3x52x y23y 2x3a2b3 9ab34c3d 2c2da22a1 a3a24a3 a21 1 681m2 m29m3a 18b2b2 19a34x3y3xy 9a 2y38xy 9x2(xy) ay ya xy7a7b 18ab3 2ab a2b2 16y2x2 x4yx26xy9y2 x23xy 6x 3 x5x3 25x29 5x36x2 y25y 6xab3 9a2b9c2d 6c3da24a4 a1a22a1 a24 3 481m2 m29m9a 16b4b 17a6x2y6xy 3b 6y38xy 9x3(xy) bm mb xy9a9b 14ab 6ab a2b2 6

11、4y2x2 x8yx212xy36y2 x26xy 4x 6 x4x9 16x281 4x99x3 y28y 9xab 7ab22c 6cda22a1 a1a22a1 a21 5 964m2 m28m5a 16b2b 11a20x3y5xy3 3a 2y7xy 3x2(xy) bx xb xy9a9b 8a3b 2ab a2b2 64y2x2 x8yx28xy16y2 x24xy 7x 8 x3x8 9x264 3x86x y7y3 6xab 7ab23c2d 6c2da26a9 a2a23a2 a29 8 881m2 m29m5a 12b4b 19a18xy3x2y 9b 6y8xy 3x9

12、(xy) bm mb xy7a7b 4ab2 6ab a2b2 25y2x2 x5yx216xy64y2 x28xy 8x 4 x2x5 4x225 2x57x3 y38y2 3xa3b3 5a2b26cd 6cda22a1 a2a25a6 a21 3 39m2 m23m9a 20b4b3 15a20xy7xy2 5a 8y3xy 7x7(xy) am ma xy9a9b 11a2b 2ab a2b2 9y2x2 x3yx214xy49y2 x27xy 5x 1 x4x8 16x264 4x82x2 y3y 5x3a2b2 3ab22c3d 4c2da26a9 a2a23a2 a29 7 94

13、m2 m22m3a 20b2b2 13a38xy8xy 7b 4y2xy 5x6(xy) ay ya xy7a7b 29ab2 10ab a2b2 25y2x2 x5yx214xy49y2 x27xy 9x 6 x2x2 4x24 2x22x2 y23y2 8x3a3b 7a3b33c 2c2da26a9 a1a24a3 a29 6 3100m2 m210m5a 10b8b 19a212x2y4xy 3b 6y5xy 5x6(xy) ax xa xy3a3b 25ab3 10ab a2b2 49y2x2 x7yx24xy4y2 x22xy 9x 9 x5x1 25x21 5x14x y23y

14、2x2ab 3ab29c 8cda24a4 a1a23a2 a24 9 764m2 m28m9a 14b8b 15a12xy4xy 9b 6y27xy 5x7(xy) bx xb xy3a3b 24ab3 8ab a2b2 16y2x2 x4yx26xy9y2 x23xy 6x 8 x2x9 4x281 2x98x2 y7y 3xa3b 7ab24c3d 6cda26a9 a3a25a6 a29 3 349m2 m27m5a 10b2b2 15a28xy9x2y 3a 8y26xy 9x3(xy) by yb xy3a3b 3ab2 4ab a2b2 9y2x2 x3yx218xy81y2 x

15、29xy 9x 1 x4x8 16x264 4x86x y27y 2x3a3b 7ab6cd 2c2da22a1 a1a24a3 a21 1 181m2 m29m5a 14b2b2 13a22xy7xy2 5b 8y3xy 9x6(xy) ax xa xy3a3b 6a2b3 6ab a2b2 49y2x2 x7yx26xy9y2 x23xy 3x 7 x3x8 9x264 3x85x y4y 4x3a3b3 5a2b6c2d 4c3da22a1 a3a25a6 a21 9 749m2 m27m9a 10b8b 11a318x3y4x2y2 7b 8y28xy 7x8(xy) by yb xy

16、7a7b 2a2b2 4ab a2b2 49y2x2 x7yx24xy4y2 x22xy 4x 5 x2x8 4x264 2x84x y23y 3x3ab2 3a3b2c2d 8c3da26a9 a1a23a2 a29 8 44m2 m22m7a 12b8b 17a220xy4x2y3 7b 8y29xy 3x3(xy) by yb xy3a3b 27a3b 2ab a2b2 49y2x2 x7yx218xy81y2 x29xy 3x 9 x4x1 16x21 4x14x y23y 4xa3b3 7ab6c 2cda24a4 a3a26a9 a24 4 281m2 m29m3a 10b4b2 13a6xy5xy2 7b 4y9xy 7x5(xy) bm mb xy9a9b 18ab3 10ab a2b2 25y2x2 x5yx210xy25y2 x25xy 7x 7 x2x9 4x281 2x95x3 y24y 2x3ab 7ab23c3d 8cda22a1 a1a23a2 a21