1、七年级数学下册整式的加减法计算题 70 1 1 (xyy)(xyx4) 8 8 (6y5x7z2)(3y8x6z2) (4k2 k)(3k22k2) (6a26a9b)(2a24a5b) 3x2( x26x8)(4x8) 2y2(6x2y)(4x29y2) 1 (7x26xyx)(6x2 xy6x) 8 3 1 (xy9y28)(x2xy4y23) 4 3 5 1 (xyy)(xyx2) 6 8 ( y5x z2)(2y3x z2) (6k27k)(6k23k6) (9a25a4b)(5a2 a8b) x2(2x22x7)(7x5) 4y2(2x2y)(8x26y2) 1 (4x28xyx)(
2、9x26xy9x) 8 1 1 (xy9y22)(x2xy2y24) 8 7 1 1 (xyy)(xyx7) 7 6 (8y3x5z2)(2y9x3z2) (9k23k)( k28k2) (4a26a4b)( a26a8b) 2x2(2x2 x4)( x4) 3y2(9x2y)(3x25y2) 4 (5x27xyx)(8x25xy2x) 5 6 1 (xy9y25)(x2xy7y26) 7 7 1 1 (xyy)(xyx1) 7 8 (3y7x6z2)(8y6x2z2) (6k29k)(5k24k3) (8a24a b)(5a29a7b) x2(2x24x2)(6x5) y2(5x2y)(5x
3、25y2) 1 (7x25xyx)(5x29xy4x) 5 1 1 (xy9y21)(x2xy5y23) 3 3 1 1 (xyy)(xyx5) 6 6 (9y7x7z2)(2y5x z2) (4k23k)(4k23k4) (3a22a4b)(2a28a b) x2(7x25x4)(4x1) 8y2(9x2y)(8x2 y2) 9 (2x26xyx)(9x24xy7x) 8 2 1 (xy8y21)(x2xy4y28) 3 8 5 5 (xyy)(xyx4) 6 6 (8y9x5z2)(6y9x4z2) (9k26k)( k25k9) ( a2 a4b)(3a25a4b) 2x2(5x23x4)(9x6)