七年级数学下册整式的加减法计算题 730.docx

1、七年级数学下册整式的加减法计算题 7307x2(5x28x7)(9x3) 8y2(6x2y)(2x2 y2) 1 (3x22xyx)( x27xy5x) 4 1 8 (xy7y25)(x2xy5y28) 4 7 1 1 (xyy)(xyx5) 7 6 (3y5x z2)(9y2x2z2) (5k26k)(9k2 k9) (4a23a4b)(6a24a b) 4x2(6x23x2)(8x1) 5y2(5x2y)(8x2 y2) 3 ( x28xyx)(6x22xy x) 4 5 1 (xy y21)(x2xy6y24) 6 4 6 1 (xyy)(xyx1) 7 6 ( y7x7z2)(3y2x

2、2z2) (7k25k)( k23k4) (6a24a3b)(2a24a3b) 4x2(4x2 x5)(7x5) 9y2(7x2y)(6x2 y2) 1 (8x24xyx)(8x22xy8x) 6 3 1 (xy3y29)(x2xy6y24) 4 5 7 1 (xyy)(xyx5) 8 3 (2y4x2z2)(5y9x4z2) (3k22k)(9k27k5) (5a27a b)(7a28a b) 6x2(6x2 x9)(6x4) 7y2(9x2y)(6x25y2) 1 (3x26xyx)(7x23xy9x) 8 8 2 (xy2y21)(x2xy8y29) 7 3 1 1 (xyy)(xyx5

3、) 6 8 (2y6x7z2)(9y x2z2) (4k27k)(9k2 k5) (7a27a4b)(3a2 a3b) 6x2(8x26x6)(7x9) 9y2(7x2y)(2x27y2) 1 (5x26xyx)(6x29xy9x) 6 6 9 (xy6y26)(x2xy2y22) 5 8 9 8 (xyy)(xyx8) 8 7 ( y x7z2)(4y9x9z2) (4k25k)(9k24k8) (4a28a5b)(9a29a8b) 9x2(5x27x1)(5x6) 7y2(8x2y)(4x24y2) 1 (2x28xyx)(3x22xy8x) 8 4 4 (xy5y25)(x2xy6y26) 3 5 4 7 (xyy)(xyx9) 3 8