1、七年级数学下册整式的加减法计算题 460 (9m26m3)(8m6n2) (5x26x2)9(4x23x) 7(x22)8(x29) (x2y5xy7)4(x2y5xy4) 4 1(x228x14y)(x214x11y) 3 3 1 1(9k34k21)(7k35k22k) 4 5 (5m29m4)(8m6n2) ( x28x3)4(6x2 x) 8(x24)4(x27) (x2y5xy6)6(x2y4xy4) 6 1(x219x12y)(x210x17y) 5 5 1 1(9k3 k28)(3k3 k23k) 4 4 (7m27m1)(6m6n1) ( x29x7)9(3x2 x) 9(x2
2、7)8(x22) (x2y3xy9)6(x2y7xy2) 5 5(x217x14y)(x217x25y) 4 4 1 1( k35k23)( k37k29k) 4 4 (7m23m5)(9m2n7) (6x29x2)5( x26x) 4(x21)8(x24) (x2y7xy7)3(x2y7xy8) 4 4(x218x19y)(x213x18y) 3 3 1 1(6k36k21)(6k37k26k) 2 4 (4m22m3)(2m n9) (9x2 x5)9(4x25x) 7(x28)6(x26) (x2y7xy4)6(x2y7xy9) 4 1(x226x10y)(x214x18y) 5 5 1
3、 1(2k39k23)(4k35k27k) 6 5 (3m25m5)(7m n5) (5x2 x3)9(3x26x) 9(x24)4(x27) (x2y4xy4)5(x2y8xy9) 1 1(x210x11y)(x220x12y) 6 6 1 1(4k39k28)(3k34k25k) 6 6 (5m22m9)(2m7n2) (6x28x8)5(6x24x) 3(x25)5(x28) (x2y9xy3)8(x2y7xy9) 1 4(x221x13y)(x218x11y) 5 5 1 1(9k35k27)(2k39k24k) 6 2 (9m22m9)( m7n2) ( x24x3)9(6x26x) 8(x21)9(x29)