1、七年级数学下册整式的加减法计算题 52 5 (4x25xyx)(6x24xy4x) 6 1 1 (xy3y23)(x2xy y21) 3 3 1 6 (xyy)(xyx3) 6 7 (5y9x8z2)(2y2x6z2) (4k28k)( k27k1) (7a25a b)(8a27a2b) 3x2(5x23x4)(9x7) 7y2(8x2y)( x25y2) 3 ( x26xyx)(6x24xy8x) 4 8 1 (xy8y26)(x2xy7y22) 7 5 7 1 (xyy)(xyx4) 8 4 (5y2x5z2)(8y2x5z2) ( k23k)(2k24k1) (4a23a5b)(9a25
2、a9b) 6x2( x26x7)(3x3) 4y2(4x2y)(6x28y2) 1 (2x23xyx)(9x22xy2x) 8 6 2 (xy8y23)(x2xy6y22) 7 3 1 3 (xyy)(xyx4) 5 4 (4y6x5z2)(8y6x8z2) (3k22k)(8k26k1) (4a29a9b)(2a24a2b) 9x2(6x27x6)(9x3) 6y2(4x2y)(9x29y2) 1 (6x2 xyx)(9x22xy7x) 6 1 9 (xy3y28)(x2xy9y23) 3 8 2 1 (xyy)(xyx4) 3 8 (6y8x8z2)(3y7x2z2) (8k24k)(4k
3、28k1) (9a26a8b)(7a25a2b) 7x2(2x27x6)(3x7) 3y2(3x2y)(2x2 y2) 1 (9x25xyx)(6x25xy4x) 7 9 6 (xy8y26)(x2xy3y21) 8 7 7 6 (xyy)(xyx2) 6 5 (8y x6z2)(8y x7z2) (7k27k)( k22k3) (2a29a3b)(4a22a6b) 3x2(5x28x4)(2x5) y2(8x2y)(9x27y2) 6 ( x28xyx)(5x25xy8x) 7 7 7 (xy6y26)(x2xy3y23) 6 6 4 1 (xyy)(xyx1) 5 4 (2y7x8z2)( y2x6z2) (4k25k)(5k25k9)