1、七年级数学下册整式的加减法计算题 5378 1 (xy4y21)(x2xy5y29) 7 5 5 1 (xyy)(xyx3) 6 5 (6y4x6z2)(5y3x3z2) (3k27k)(9k23k9) (8a27a9b)(9a24a9b) 4x2(5x28x6)(5x7) 7y2( x2y)(4x23y2) 3 (8x27xyx)(2x26xy4x) 4 7 1 (xy2y21)(x2xy2y21) 6 6 1 6 (xyy)(xyx3) 4 7 (8y2x6z2)(8y6x9z2) (7k27k)( k2 k7) (2a22a7b)(8a25a7b) 8x2(2x27x6)( x4) 3y
2、2(5x2y)(3x26y2) 1 (8x26xyx)(9x28xy9x) 4 1 1 (xy3y29)(x2xy7y23) 7 5 3 9 (xyy)(xyx2) 4 8 (4y9x4z2)(6y6x3z2) (5k24k)(3k25k3) (9a29a2b)(6a27a b) 5x2(4x25x4)(8x4) 4y2(7x2y)(7x23y2) 1 (9x28xyx)( x27xy5x) 7 1 1 (xy y26)(x2xy y23) 7 3 1 1 (xyy)(xyx1) 5 5 (2y3x5z2)(9y2x z2) (6k28k)(8k22k2) (3a25a6b)(4a25a9b)
3、 4x2(8x24x5)(9x2) 7y2(8x2y)(4x27y2) 1 (9x22xyx)(2x26xy9x) 3 6 1 (xy y25)(x2xy y27) 7 4 8 1 (xyy)(xyx4) 7 3 (5y4x8z2)(4y2x6z2) (8k23k)(7k23k2) (6a28a b)(3a29a7b) 9x2(5x2 x9)(5x4) 4y2(7x2y)(4x23y2) 1 (2x23xyx)(8x27xy7x) 5 9 1 (xy2y25)(x2xy8y29) 8 4 4 8 (xyy)(xyx9) 5 7 (3y5x9z2)(8y4x3z2) (2k22k)(9k26k7) (4a25a2b)(7a27a9b)