1、七年级数学下册整式的加减法计算题 92 3 (3x22xyx)(4x27xy3x) 4 1 1 (xy5y23)(x2xy3y25) 7 5 6 1 (xyy)(xyx3) 5 6 (4y6x8z2)(6y5x5z2) (2k22k)(7k24k3) (2a22a7b)(2a2 a6b) 6x2(8x2 x7)(2x5) 5y2(4x2y)( x26y2) 5 (4x2 xyx)(7x23xy3x) 4 8 4 (xy9y21)(x2xy7y29) 7 3 1 1 (xyy)(xyx6) 6 4 (9y8x5z2)(4y6x9z2) (2k26k)(6k27k2) (7a25a8b)( a28
2、a b) 4x2(7x29x4)(9x6) 6y2(6x2y)(2x24y2) 1 ( x28xyx)(5x24xy3x) 5 2 1 (xy7y25)(x2xy6y22) 3 5 6 1 (xyy)(xyx5) 5 4 (9y7x4z2)( y4x9z2) (6k2 k)( k22k3) (5a25a8b)(2a25a7b) 7x2(8x28x9)( x8) y2( x2y)(8x2 y2) 1 (8x23xyx)(3x25xy6x) 5 5 1 (xy9y27)(x2xy9y26) 4 7 4 1 (xyy)(xyx5) 5 8 (7y6x3z2)(8y2x5z2) (2k29k)(7k2
3、3k6) (8a24a4b)(2a28a4b) 4x2( x24x9)(6x9) 7y2(2x2y)(4x29y2) 5 ( x26xyx)(2x24xy6x) 6 1 1 (xy2y22)(x2xy y28) 7 8 3 1 (xyy)(xyx9) 4 5 (6y6x z2)(5y6x3z2) (6k22k)(7k26k9) (5a26a b)(5a23a6b) 7x2(3x25x3)(4x3) 4y2(5x2y)(7x27y2) 2 (4x2 xyx)(8x24xy x) 3 8 1 (xy2y29)(x2xy y23) 7 7 7 2 (xyy)(xyx2) 6 3 (7y2x5z2)(2y7x2z2) (3k26k)( k24k8)