七年级数学下册整式的加减法练习题精选强烈推荐 146.docx

1、七年级数学下册整式的加减法练习题精选强烈推荐 146 1(7x29xyx)( x23xy7x) 7 7 6(xy2y23)(x2xy4y27) 8 5 1 1(xyy)(xyx7) 4 3 (5y3x5z2)(7y4x9z2) (7m25m2)(2m9n5) (9x27x4)4(8x25x) 5(x27)2(x25) (x2y5xy3)6(x2y9xy2) 7 5(x212x14y)(x213x19y) 6 6 1 1(3k33k24)(4k3 k21k) 4 5 (4k28k)(3k2 k1) (6a26a3b)(7a29a7b) 4x2(9x23x4)( x7) 5y2( x2y)(2x2

2、5y2) 4(8x28xyx)(3x27xy6x) 5 4 1(xy4y22)(x2xy7y24) 5 8 8 1(xyy)(xyx7) 7 7 (3y3x8z2)(4y x6z2) ( m2 m9)(5m n6) (2x22x3)9(7x2 x) 9(x22)3(x26) (x2y8xy8)7(x2y6xy8) 5 1(x216x19y)(x219x19y) 6 6 1 1(5k36k26)(8k35k26k) 2 4 (8k2 k)( k29k1) (6a28a6b)(6a26a b) 6x2(6x26x1)(5x3) 2y2(2x2y)( x23y2) 7( x27xyx)( x2 xy

3、2x) 6 1 4(xy6y28)(x2xy y29) 5 3 1 5(xyy)(xyx6) 4 6 (7y7x z2)(4y8x6z2) (3m27m4)(3m3n3) (5x24x2)6(8x27x) 7(x27)8(x24) (x2y4xy6)3(x2y9xy5) 1 5(x224x15y)(x217x27y) 6 6 1 1(4k36k25)(6k37k28k) 2 4 (6k26k)(3k22k2) (3a26a2b)(7a28a6b) 3x2(9x27x9)(6x3) 8y2(6x2y)( x2 y2) 5(8x27xyx)( x2 xy4x) 4 3 1(xy7y22)(x2xy4y22) 4 4 6 7(xyy)(xyx8) 5 8