1、七年级数学下册整式的加减法计算题 163(3y7x8z2)(4y9x5z2) (6k29k)(4k25k4) (2a2 a b)(3a29a b) x2(3x25x9)(4x4) 2y2(7x2y)(2x24y2) 1 (8x23xyx)( x29xy4x) 8 3 5 (xy8y25)(x2xy7y26) 4 6 9 1 (xyy)(xyx8) 8 8 (7y8x z2)(7y2x5z2) (4k24k)( k25k6) (6a22a3b)(9a29a4b) x2(4x22x9)(7x9) 3y2(5x2y)(6x22y2) 1 (5x27xyx)(8x29xy6x) 5 1 1 (xy4y
2、28)(x2xy6y23) 4 6 4 6 (xyy)(xyx2) 5 5 (6y8x2z2)(5y4x4z2) (8k2 k)(2k2 k6) (3a24a7b)(5a25a b) 3x2(4x25x5)(6x6) 5y2(9x2y)(4x27y2) 1 (7x22xyx)(6x26xy8x) 6 1 1 (xy8y26)(x2xy5y28) 8 4 8 3 (xyy)(xyx2) 7 4 (8y9x8z2)(9y8x8z2) (5k29k)(5k26k5) (9a27a6b)(5a2 a b) 8x2(5x29x5)(3x5) 9y2(6x2y)(6x24y2) 5 (5x2 xyx)(5
3、x27xy3x) 6 5 1 (xy5y23)(x2xy y24) 4 6 7 7 (xyy)(xyx9) 8 8 (8y3x3z2)(9y7x6z2) ( k25k)(6k26k1) (2a27a4b)(6a23a7b) 8x2(4x24x7)(8x2) 4y2(9x2y)( x26y2) 1 (8x23xyx)(5x2 xy8x) 8 1 1 (xy9y27)(x2xy2y21) 7 4 5 1 (xyy)(xyx7) 6 8 (2y5x5z2)(4y5x4z2) (7k26k)(9k28k7) (7a29a7b)(5a26a9b) 9x2(7x24x4)(9x3) y2(6x2y)(6x2 y2)