人教版八年级数学上册分式的乘除法练习题精选27.docx

1、人教版八年级数学上册分式的乘除法练习题精选279a 12b8b 13a212xy7x2y 5a 8y22xy 7x6(xy) am ma xy3a3b 18a3b 10ab a2b2 81y2x2 x9yx28xy16y2 x24xy 2x 3 x4x8 16x264 4x89x2 y8y 3x2a2b2 7ab29c2d 2c3da26a9 a3a26a9 a29 7 836m2 m26m3a 12b2b 11a218x3y5x3y3 5b 4y8xy 5x2(xy) am ma xy9a9b 18ab2 6ab a2b2 4y2x2 x2yx212xy36y2 x26xy 3x 6 x5x

2、5 25x225 5x57x y38y3 2xa3b 5a3b2c3 8cda26a9 a3a25a6 a29 2 149m2 m27m3a 10b2b3 15a312x3y7x3y 9b 2y24xy 9x4(xy) ay ya xy7a7b 25a3b2 6ab a2b2 9y2x2 x3yx24xy4y2 x22xy 4x 4 x5x4 25x216 5x44x3 y23y 8x2a2b 7ab7c 4c3da24a4 a2a24a4 a24 6 436m2 m26m7a 18b2b 19a22x2y6xy3 3b 4y24xy 9x5(xy) nm mn xy7a7b 4ab3 10a

3、b a2b2 16y2x2 x4yx24xy4y2 x22xy 4x 1 x2x5 4x225 2x59x3 y38y 3xa3b 3ab34c2 8c3da24a4 a3a26a9 a24 7 349m2 m27m3a 12b2b 13a16xy3x2y3 5a 6y36xy 9x3(xy) ax xa xy3a3b 30ab2 4ab a2b2 16y2x2 x4yx26xy9y2 x23xy 9x 7 x5x1 25x21 5x17x3 y6y 4x3a2b 7a3b7c2d 6c2da26a9 a2a24a4 a29 3 436m2 m26m7a 16b2b 11a34xy3xy 7a

4、 2y8xy 5x4(xy) nm mn xy5a5b 4ab 6ab a2b2 16y2x2 x4yx218xy81y2 x29xy 6x 7 x2x9 4x281 2x92x2 y3y3 5x2ab2 9ab36cd 4c2da24a4 a3a26a9 a24 4 39m2 m23m3a 12b4b2 13a22x2y9xy2 3b 2y38xy 5x9(xy) nx xn xy7a7b 10a2b 8ab a2b2 64y2x2 x8yx26xy9y2 x23xy 6x 2 x5x3 25x29 5x32x y33y3 5x3a2b 3ab5c2 6c3da26a9 a3a26a9 a2

5、9 7 225m2 m25m5a 20b8b 11a220x3y8x2y 7b 6y4xy 3x5(xy) ay ya xy3a3b 17ab 2ab a2b2 64y2x2 x8yx28xy16y2 x24xy 7x 7 x3x9 9x281 3x96x2 y5y2 3x2a3b2 5ab29c 2c3da26a9 a1a22a1 a29 5 336m2 m26m5a 16b2b 17a16x2y4xy 9b 8y6xy 9x5(xy) ax xa xy5a5b 13a2b2 4ab a2b2 64y2x2 x8yx26xy9y2 x23xy 4x 3 x2x5 4x225 2x58x y3

6、7y 3x2ab3 3a3b2c3d 8cda24a4 a1a22a1 a24 2 29m2 m23m5a 18b8b 17a6x2y5xy 5b 4y8xy 5x3(xy) nx xn xy9a9b 28a2b 4ab a2b2 64y2x2 x8yx210xy25y2 x25xy 5x 5 x2x3 4x29 2x36x y7y2 9x3ab3 9ab9cd 8cda22a1 a3a26a9 a21 2 225m2 m25m7a 16b6b2 17a18xy2x3y3 5b 8y24xy 9x3(xy) bx xb xy9a9b 6ab 4ab a2b2 64y2x2 x8yx218xy8

7、1y2 x29xy 4x 9 x5x5 25x225 5x53x y4y 9x3ab 5ab3c3d 8cda22a1 a3a26a9 a21 4 19m2 m23m3a 10b2b 15a24x2y7xy 3a 6y2xy 9x9(xy) ax xa xy3a3b 17ab 8ab a2b2 36y2x2 x6yx28xy16y2 x24xy 5x 1 x2x3 4x29 2x37x3 y6y 8xab2 9ab27cd 6c3da22a1 a2a25a6 a21 5 1100m2 m210m3a 18b6b 11a12x3y7x2y3 5b 2y2xy 9x2(xy) nm mn xy7a

8、7b 3a2b 8ab a2b2 81y2x2 x9yx214xy49y2 x27xy 9x 7 x2x4 4x216 2x47x3 y8y3 3xab3 7ab5c2 2c2da26a9 a1a23a2 a29 2 836m2 m26m9a 10b4b3 11a20x3y5x3y 3a 6y27xy 9x4(xy) ay ya xy7a7b 8a2b 6ab a2b2 16y2x2 x4yx218xy81y2 x29xy 3x 4 x5x2 25x24 5x22x y3y3 4x3a3b2 7ab6cd 2cda22a1 a2a25a6 a21 2 416m2 m24m5a 14b4b3 1

9、9a20xy6x3y3 7a 6y25xy 9x2(xy) ax xa xy9a9b 13ab 10ab a2b2 64y2x2 x8yx218xy81y2 x29xy 9x 2 x4x4 16x216 4x45x y24y 3x3ab2 7ab23cd 8cda26a9 a3a25a6 a29 7 649m2 m27m5a 10b2b 15a22xy2x2y2 7a 4y4xy 3x8(xy) bx xb xy5a5b 27ab 10ab a2b2 81y2x2 x9yx218xy81y2 x29xy 8x 5 x3x8 9x264 3x86x y7y 2xa3b2 9a2b35cd 8cd

10、a26a9 a2a24a4 a29 5 764m2 m28m7a 10b2b3 11a16x3y9x3y 5a 8y6xy 7x2(xy) bm mb xy5a5b 3a3b 6ab a2b2 36y2x2 x6yx24xy4y2 x22xy 8x 8 x2x7 4x249 2x78x y27y2 8xab2 3a3b6cd 8cda24a4 a1a24a3 a24 7 84m2 m22m5a 20b8b 17a16xy5xy 7b 8y6xy 5x2(xy) nm mn xy3a3b 15a3b3 2ab a2b2 4y2x2 x2yx216xy64y2 x28xy 8x 2 x5x5 25

11、x225 5x58x3 y7y 5x3a3b2 5a2b22c2 2c2da26a9 a2a24a4 a29 1 436m2 m26m3a 14b4b 13a22x2y9xy2 7a 4y39xy 3x7(xy) bm mb xy9a9b 18ab3 6ab a2b2 25y2x2 x5yx24xy4y2 x22xy 2x 7 x3x5 9x225 3x56x3 y27y2 3x2ab3 3a3b6cd 8cda22a1 a3a25a6 a21 9 436m2 m26m7a 16b8b 13a28x2y6x2y 7b 8y4xy 5x7(xy) bx xb xy5a5b 14a2b 8ab a

12、2b2 9y2x2 x3yx218xy81y2 x29xy 2x 4 x3x7 9x249 3x76x2 y7y 6xa2b3 9ab37c 2c2da24a4 a3a25a6 a24 5 681m2 m29m7a 16b2b2 13a6x2y4x3y 9a 6y35xy 3x3(xy) ax xa xy3a3b 14ab 10ab a2b2 4y2x2 x2yx214xy49y2 x27xy 4x 1 x2x1 4x21 2x14x y23y3 5xab2 5a3b23cd 4cda24a4 a3a25a6 a24 3 4100m2 m210m5a 10b8b 15a16xy6x3y 7a

13、4y24xy 7x8(xy) by yb xy7a7b 24a3b 8ab a2b2 9y2x2 x3yx28xy16y2 x24xy 8x 6 x2x7 4x249 2x77x2 y6y 7x2ab 5a2b29cd 4cda22a1 a1a24a3 a21 7 749m2 m27m7a 12b6b3 13a218x2y9x3y2 7b 8y36xy 5x9(xy) bx xb xy3a3b 25a2b 8ab a2b2 49y2x2 x7yx210xy25y2 x25xy 9x 8 x3x1 9x21 3x19x2 y28y 6x3a3b2 7ab23c2 8cda22a1 a2a25a6

14、 a21 4 249m2 m27m3a 10b8b3 17a2xy7xy2 3b 6y22xy 3x8(xy) nm mn xy3a3b 21a3b 2ab a2b2 64y2x2 x8yx212xy36y2 x26xy 9x 9 x4x3 16x29 4x32x2 y3y 5x3ab2 5ab23c3d 2c2da22a1 a2a23a2 a21 7 236m2 m26m7a 12b6b 15a212xy5xy 7a 4y6xy 3x7(xy) bm mb xy5a5b 2a2b 8ab a2b2 4y2x2 x2yx216xy64y2 x28xy 2x 2 x4x1 16x21 4x13x

15、 y4y 3x3a2b 9a2b34c3 6c2da26a9 a2a24a4 a29 1 781m2 m29m3a 18b4b3 19a10xy6x2y3 9a 2y22xy 9x8(xy) ax xa xy3a3b 17a3b3 6ab a2b2 36y2x2 x6yx24xy4y2 x22xy 4x 8 x3x5 9x225 3x52x y3y 6x3ab3 3a2b28c 2cda22a1 a1a22a1 a21 3 949m2 m27m3a 12b8b2 15a16x2y3xy3 3b 6y4xy 9x3(xy) nx xn xy5a5b 17ab 8ab a2b2 49y2x2 x7

16、yx28xy16y2 x24xy 3x 7 x3x6 9x236 3x63x2 y24y 6xab 7ab37c 4cda26a9 a3a26a9 a29 2 825m2 m25m9a 20b8b3 17a6xy7xy 5b 8y2xy 5x5(xy) bx xb xy7a7b 4ab3 4ab a2b2 81y2x2 x9yx216xy64y2 x28xy 4x 5 x5x1 25x21 5x15x2 y34y 5x3ab2 7ab32c2 8c2da24a4 a3a26a9 a24 5 416m2 m24m9a 16b4b2 11a216x3y7x2y 7a 8y22xy 3x8(xy) nx xn xy5a5b 12a2b2 6ab a2b2 16y2x2 x4yx210xy25y2 x25xy 5x 5 x5x4 25x216 5x44x3 y3y2 2xa3b3 5a2b6cd 6cda26a9 a3a26a9 a29 9 549m2 m27m3a 20b8b3 17a3