人教版八年级数学上册分式的乘除法练习题精选68.doc

人教版八年级数学上册分式的乘除法练习题精选ab2 5a3b32c2 8cda24a4 a3a25a6 a24 2 449m2 m27m3a 12b6b3 13a32x2y7xy 5b 6y5xy 5x7(xy) nm mn xy3a3b 24a3b 8ab a2b2 36y2x2 x6yx28xy16y2 x24xy 8x 4 x5x6 25x236 5x65x2 y26y3 5x3a3b2 7ab37c 4cda22a1 a2a23a2 a21 3 625m2 m25m7a 16b2b2 11a28x3y4xy 9b 8y28xy 9x7(xy) ax xa xy7a7b 29ab 8ab a2b2 16y2x2 x4yx218xy81y2 x29xy 7x 6 x4x1 16x21 4x14x y23y3 8xa2b 7ab2cd 2c2da24a4 a2a24a4 a24 6 4100m2 m210m3a 12b8b 19a14x3y4x3y 5b 2y29xy 7x5(xy) ny yn xy9a9b 19a3b2 4ab a2b2 25y2x2 x5yx24xy4y2 x22xy 5x 8 x5x9 25x281 5x93x y24y 6x3a3b 7ab24c2d 4c2da24a4 a3a24a3 a24 6 816m2 m24m5a 14b2b 13a4x2y9x3y3 5b 2y8xy 3x9(xy) bx xb xy3a3b 23ab 8ab a2b2 64y2x2 x8yx28xy16y2 x24xy 5x 1 x4x8 16x264 4x87x y6y3 9xa3b 9ab6c2d 4cda24a4 a2a23a2 a24 8 625m2 m25m7a 20b4b 17a8xy2x2y2 9b 6y3xy 5x5(xy) nx xn xy5a5b 6ab 6ab a2b2 25y2x2 x5yx24xy4y2 x22xy 6x 8 x3x2 9x24 3x25x y34y 7xab 7ab6c 2cda22a1 a1a22a1 a21 5 581m2 m29m9a 10b6b 13a212x3y2x2y2 9b 6y7xy 9x7(xy) nm mn xy7a7b 21ab2 2ab a2b2 4y2x2 x2yx210xy25y2 x25xy 8x 2 x3x7 9x249 3x79x2 y28y 6x3a2b3 7ab5cd 6cda26a9 a1a23a2 a29 7 116m2 m24m3a 10b6b 19a20x3y8x2y3 5b 2y3xy 7x9(xy) nm mn xy3a3b 12a3b 6ab a2b2 25y2x2 x5yx218xy81y2 x29xy 5x 7 x4x9 16x281 4x98x y7y 2x2a3b2 9a3b2c3 2cda24a4 a1a24a3 a24 1 636m2 m26m7a 14b8b 15a4x2y3x3y 5b 2y3xy 9x2(xy) bm mb xy5a5b 23a2b3 4ab a2b2 64y2x2 x8yx212xy36y2 x26xy 9x 8 x3x9 9x281 3x98x y7y 9xab 3a2b9cd 6cda24a4 a1a23a2 a24 3 364m2 m28m3a 18b8b 13a314x3y7x3y3 3a 8y5xy 3x5(xy) nm mn xy5a5b 28a3b 2ab a2b2 81y2x2 x9yx214xy49y2 x27xy 5x 9 x2x5 4x225 2x56x y7y 3x3ab 9ab4cd 4c3da24a4 a2a23a2 a24 8 149m2 m27m7a 12b6b 19a314x2y8x2y 3b 8y8xy 3x5(xy) ax xa xy5a5b 19a3b 8ab a2b2 64y2x2 x8yx24xy4y2 x22xy 6x 5 x3x9 9x281 3x99x y8y 6x2ab 7a2b5cd 8c2da22a1 a2a24a4 a21 2 281m2 m29m9a 16b6b2 15a214x2y4xy3 5a 6y24xy 3x2(xy) by yb xy9a9b 19a3b3 4ab a2b2 64y2x2 x8yx24xy4y2 x22xy 4x 5 x2x7 4x249 2x75x y6y 7xab2 5ab9c 4c3da22a1 a3a24a3 a21 5 44m2 m22m5a 14b4b 17a212xy2xy 9b 4y32xy 7x2(xy) ny yn xy5a5b 30ab 2ab a2b2 49y2x2 x7yx24xy4y2 x22xy 9x 9 x4x1 16x21 4x13x3 y34y3 4x2ab3 9ab33cd 6c3da24a4 a2a25a6 a24 7 1100m2 m210m9a 10b8b 13a218x3y3x3y3 3b 8y28xy 7x6(xy) nx xn xy5a5b 8a2b3 8ab a2b2 64y2x2 x8yx210xy25y2 x25xy 3x 3 x2x2 4x24 2x24x y5y3 4xab2 3ab28cd 4cda26a9 a2a25a6 a29 5 681m2 m29m5a 20b2b 17a16x2y6x2y2 7a 6y7xy 7x2(xy) nx xn xy5a5b 19ab2 4ab a2b2 25y2x2 x5yx214xy49y2 x27xy 2x 1 x2x5 4x225 2x52x y23y3 9x3a2b 7a3b6c2 2c3da26a9 a1a23a2 a29 5 536m2 m26m3a 20b8b 19a310xy5xy 9a 6y7xy 5x7(xy) nx xn xy3a3b 8a3b3 2ab a2b2 36y2x2 x6yx214xy49y2 x27xy 6x 5 x3x5 9x225 3x56x y27y 8xab3 7a3b4c3 6c3da26a9 a1a24a3 a29 5 7100m2 m210m9a 18b8b3 13a316xy9x3y 9a 8y5xy 9x3(xy) bm mb xy7a7b 8ab 8ab a2b2 49y2x2 x7yx212xy36y2 x26xy 3x 2 x5x1 25x21 5x13x y34y2 7xab 9a3b39cd 2cda22a1 a1a24a3 a21 8 449m2 m27m7a 18b2b3 15a34xy8x2y3 7b 6y2xy 7x6(xy) am ma xy7a7b 5a3b3 4ab a2b2 16y2x2 x4yx210xy25y2 x25xy 8x 8 x5x4 25x216 5x46x2 y25y 9xab 7a2b38c 8c2da22a1 a1a22a1 a21 2 4100m2 m210m3a 20b8b 13a314xy2xy 7a 4y24xy 3x9(xy) am ma xy9a9b 20a2b 2ab a2b2 36y2x2 x6yx210xy25y2 x25xy 8x 1 x4x1 16x21 4x18x y7y3 9xab2 5a2b5c3 2c3da26a9 a1a24a3 a29 1 54m2 m22m3a 20b6b 11a18xy9xy2 9a 6y26xy 7x2(xy) bm mb xy9a9b 19a3b3 2ab a2b2 25y2x2 x5yx210xy25y2 x25xy 6x 1 x5x8 25x264 5x83x y4y3 8x3a2b2 3a2b5c3d 6cda26a9 a3a24a3 a29 7 89m2 m23m7a 14b6b 11a6xy6xy3 9a 4y28xy 3x3(xy) ay ya xy5a5b 28a3b2 6ab a2b2 9y2x2 x3yx216xy64y2 x28xy 9x 8 x5x4 25x216 5x44x3 y33y2 7x2ab 9ab8c2d 4cda22a1 a3a24a3 a21 4 864m2 m28m5a 18b8b 11a220xy2xy 9a 2y34xy 3x5(xy) nm mn xy3a3b 15a2b 10ab a2b2 81y2x2 x9yx26xy9y2 x23xy 9x 8 x5x5 25x225 5x55x3 y6y2 7xa3b3 5a2b4cd 6c3da24a4 a2a23a2 a24 6 149m2 m27m7a 12b2b 19a14xy6x2y3 5b 2y23xy 9x3(xy) bx xb xy7a7b 24ab2 2ab a2b2 64y2x2 x8yx24xy4y2 x22xy 9x 5 x2x3 4x29 2x35x y36y3 7xab3 5a2b8c 2cda24a4 a2a24a4 a24 8 349m2 m27m5a 14b8b 13a20xy3xy 3b 8y27xy 9x8(xy) ay ya xy3a3b 25ab 4ab a2b2 49y2x2 x7yx24xy4y2 x22xy 9x 6 x4x6 16x236 4x67x y28y3 2x2ab2 9ab3c 8c2da22a1 a3a25a6 a21 1 836m2 m26m5a 16b8b3 17a8x2y3xy 5b 2y39xy 5x8(xy) am ma xy9a9b 26ab 8ab a2b2 36y2x2 x6yx218xy81y2 x29xy 7x 7 x4x4 16x216 4x44x y5y3 7xa2b 9ab27c2 8c3da22a1 a3a24a3 a21 8 316m2 m24m5a 18b4b2 15a38xy7x2y2 7b 6y26xy 7x5(xy) nm mn xy7a7b 9a2b 10ab a2b2 25y2x2 x5yx218xy81y2 x29xy 4x 2 x2x6 4x236 2x65x y24y 4xab 7a2b6c2d 8cda26a9 a3a25a6 a29 9 116m2 m24m9a 20b4b 15a22xy9x2y 7b 2y25xy 3x4(xy) ay ya xy5a5b 4a3b2 4ab a2b2 4y2x2 x2yx28xy16y2 x24xy 3x 2 x3x9 9x281 3x95x y4y3 2x3a3b 9a2b8c 2cda24a4 a2a23a2 a24 3 636m2 m26m3a 10b2b2 11a2xy7xy 3b 6y5xy 9x5(xy) ny yn xy3a3b 10a2b 10ab a2b2 9y2x2 x3yx26xy9y2 x23xy 6x 1 x2x3 4x29 2x33x3 y4y 4xab 5ab6c3d 6cda24a4 a3a24a3 a24 6 481m2 m29m7a 20b4b 17a28x2y8x3y2 7b 4y3xy 3x7(xy) ny yn xy5a5b 2a2b 8ab a2b2 64y2x2 x8yx218xy81y2 x29xy 6x 2 x2x3 4x29 2x33x2 y34y2 9x3ab2 3ab2c2 4c3da22a1 a3a25a6 a21 6 44m2 m22m7a 10b4b 13a18xy3xy 3b 2y23xy 3x7(xy) ny yn xy3a3b 16a3b 8ab a2b2 36y2x2 x6yx24xy4y2 x22xy 8x 9 x4x4 16x216 4x47x y28y2 7xab2 7a2b23c 6cd