1、七年级数学整式的加减法计算题大全 68 (3m23m1)(3m7n7) (4x24x1)3(4x25x) 3(x21)6(x26) (x2y4xy3)3(x2y2xy7) 1 7(x217x15y)(x220x28y) 6 6 1 1(2k34k23)(8k37k29k) 6 3 (5k2 k)(7k28k5) (8a25a4b)(2a28a9b) 8x2(7x24x8)(9x8) 5y2(9x2y)(4x22y2) 1(6x2 xyx)(9x29xy6x) 8 1 4(xy8y22)(x2xy2y22) 7 3 5 5(xyy)(xyx4) 4 6 (5y7x9z2)(5y8x4z2) (2
2、m28m3)(9m2n3) (7x25x9)4(4x29x) 7(x24)7(x28) (x2y9xy6)3(x2y4xy9) 9 1(x210x11y)(x212x25y) 8 8 1 1(5k32k22)(2k34k22k) 2 4 (3k2 k)( k2 k9) (2a27a2b)( a2 a5b) 8x2( x23x3)(5x2) y2(8x2y)( x27y2) 1(4x29xyx)(6x25xy9x) 8 9 8(xy2y29)(x2xy3y24) 8 7 1 1(xyy)(xyx6) 6 7 (2y9x7z2)(7y6x3z2) (8m28m4)( m3n1) ( x23x5)2(5x27x) 8(x28)9(x26) (x2y7xy7)4(x2y8xy5) 1 1(x215x13y)(x218x25y) 6 6 1 1(8k36k26)(8k36k27k) 4 2 (7k23k)(5k28k2) (5a29a4b)(7a27a2b) 3x2(2x23x1)(5x2) 8y2(3x2y)(9x25y2) 4(7x22xyx)(3x26xy7x) 3 4 6(xy y27)(x2xy6y24) 3 5 1 7(xyy)(xyx3) 7 6 (7y5x8z2)(5y3x9z2) (9m26m1)(5m7n1) (7x25x8)8(8x28x) 8(x24)6(x28)