七年级数学下册整式的加减法计算题 5.docx

1、七年级数学下册整式的加减法计算题 5(2a28a3b)(6a24a2b) 9x2( x22x5)(9x2) 5y2(4x2y)(2x23y2) 5 (3x22xyx)(5x29xy9x) 6 1 5 (xy9y24)(x2xy y29) 4 6 1 1 (xyy)(xyx7) 5 6 (7y2x7z2)(6y6x6z2) (7k27k)(3k25k8) (4a23a4b)(5a29a b) 4x2(3x26x7)(2x8) 7y2(7x2y)(5x27y2) 6 (7x29xyx)(8x28xy2x) 7 4 1 (xy y23)(x2xy3y26) 5 6 9 8 (xyy)(xyx8) 8

2、 7 ( y4x z2)(8y7x4z2) (7k26k)(2k23k6) (9a29a8b)(4a2 a8b) 7x2(4x25x4)(6x3) y2(5x2y)(4x23y2) 1 ( x24xyx)(9x25xy x) 3 4 4 (xy3y22)(x2xy6y29) 3 3 6 5 (xyy)(xyx8) 5 4 (2y7x5z2)(5y x5z2) (6k22k)(8k23k7) (3a27a7b)( a24a9b) 2x2(9x26x3)(5x2) 2y2(5x2y)(2x26y2) 1 (3x24xyx)(6x29xy2x) 8 1 1 (xy4y25)(x2xy3y21) 7

3、4 1 1 (xyy)(xyx5) 6 6 (4y4x3z2)(9y2x z2) (4k23k)(7k2 k1) (9a24a4b)(3a24a4b) 6x2( x28x7)(9x1) 6y2(4x2y)(4x23y2) 7 (9x2 xyx)(9x23xy4x) 8 1 6 (xy2y28)(x2xy3y24) 3 5 5 2 (xyy)(xyx3) 6 3 (7y8x2z2)(4y2x2z2) (6k23k)(2k27k2) (4a24a9b)(3a27a2b) 8x2(4x24x7)(4x3) 7y2(5x2y)(8x28y2) 4 (5x27xyx)(3x27xy4x) 5 1 9 (xy2y27)(x2xy8y23) 3 8