七年级数学下册整式的加减法练习题精选强烈推荐 374.docx

1、七年级数学下册整式的加减法练习题精选强烈推荐 374 4x2( x27x2)(9x2) 2y2(6x2y)( x27y2) 1(9x27xyx)(7x24xy3x) 5 1 5(xy7y23)(x2xy6y29) 3 4 6 2(xyy)(xyx1) 7 3 (9y4x z2)(6y2x3z2) (6m23m8)(7m3n2) (3x25x4)6(9x27x) 2(x27)4(x29) (x2y6xy2)6(x2y8xy5) 5 3(x225x13y)(x219x12y) 4 4 1 1(2k38k22)(5k37k28k) 4 5 (6k2 k)(6k2 k2) (2a22a8b)(8a29

2、a5b) 9x2(3x29x5)(2x8) 8y2(4x2y)(7x23y2) 4(5x27xyx)(7x24xy8x) 3 1 7(xy2y26)(x2xy4y27) 3 8 1 6(xyy)(xyx7) 3 7 (5y5x z2)(4y3x4z2) (2m26m4)(4m2n6) (8x29x4)9(6x25x) 9(x22)5(x21) (x2y3xy3)4(x2y3xy8) 1 2(x228x16y)(x212x27y) 3 3 1 1(3k3 k24)(8k37k27k) 4 2 (6k23k)(2k22k8) (6a27a b)(9a29a2b) x2(7x25x8)(3x5) 9

3、y2(2x2y)(6x24y2) 1(9x25xyx)(6x25xy3x) 8 4 1(xy4y26)(x2xy9y24) 3 6 1 5(xyy)(xyx3) 6 4 (4y9x6z2)(2y7x6z2) (7m25m6)(4m9n1) ( x22x9)9(8x22x) 6(x26)5(x22) (x2y6xy7)7(x2y4xy2) 4 4(x216x11y)(x211x15y) 3 3 1 1(2k38k26)( k39k21k) 2 6 (5k24k)( k24k1) (8a27a2b)(6a26a b) 5x2(6x24x8)( x4) 6y2( x2y)(6x27y2) 1(7x26xyx)(9x26xy6x) 8