1、七年级数学下册整式的加减法计算题(5k28k)(4k2 k6) (8a27a3b)(7a25a9b) 8x2(7x26x4)(2x4) 2y2(7x2y)(5x26y2) 3 (9x23xyx)( x25xy9x) 4 1 2 (xy9y21)(x2xy9y25) 3 3 7 5 (xyy)(xyx8) 6 4 (5y5x6z2)(7y5x5z2) (9k24k)(3k29k1) (9a22a8b)(6a26a3b) 4x2(2x26x7)(4x1) 4y2(3x2y)( x27y2) 2 (8x25xyx)(8x26xy x) 3 6 1 (xy8y25)(x2xy3y29) 5 8 1 4
2、 (xyy)(xyx8) 8 5 (5y7x7z2)(4y4x5z2) (2k27k)(8k26k1) (7a22a6b)( a24a7b) 3x2(5x24x8)(3x4) 4y2(5x2y)(9x22y2) 1 (7x26xyx)(3x26xy4x) 3 7 1 (xy3y21)(x2xy3y27) 8 8 1 1 (xyy)(xyx8) 6 5 (7y3x z2)(7y8x4z2) (8k28k)(2k26k1) ( a2 a2b)(2a23a5b) 3x2(3x29x1)(7x6) 6y2(3x2y)(6x26y2) 6 ( x26xyx)(6x28xy x) 7 1 1 (xy y2
3、8)(x2xy7y24) 3 5 5 9 (xyy)(xyx7) 4 8 (5y6x9z2)(7y7x9z2) (5k22k)( k25k4) ( a2 a7b)(9a23a4b) 3x2(5x29x6)(4x3) 8y2( x2y)(8x24y2) 7 (3x25xyx)(9x23xy7x) 6 7 1 (xy6y26)(x2xy9y21) 6 6 1 1 (xyy)(xyx3) 5 6 (4y4x4z2)(7y5x4z2) (3k2 k)(2k28k1) ( a25a3b)(7a23a9b) 7x2(6x26x8)(3x6) 8y2(9x2y)(3x28y2) 1 (6x26xyx)(2x24xy4x) 5
