七年级数学下册整式的加减法计算题 757.docx

1、七年级数学下册整式的加减法计算题 757(9a23a b)(4a22a8b) 6x2(2x25x9)(3x2) 8y2( x2y)(6x24y2) 1 (6x29xyx)( x28xy x) 4 1 1 (xy9y22)(x2xy8y28) 3 8 4 7 (xyy)(xyx5) 5 6 (3y4x7z2)(5y3x6z2) ( k28k)(7k24k2) (6a24a5b)(7a24a3b) 5x2(6x25x2)( x1) 3y2( x2y)( x27y2) 1 (7x22xyx)(7x26xy8x) 8 9 7 (xy2y23)(x2xy3y28) 8 6 4 1 (xyy)(xyx4)

2、 5 6 (8y5x6z2)(9y9x3z2) (3k22k)(4k29k8) (9a27a8b)( a28a5b) 8x2(7x26x3)(7x1) 5y2( x2y)(5x22y2) 1 (4x22xyx)(3x27xy6x) 5 4 1 (xy4y22)(x2xy5y24) 5 7 7 5 (xyy)(xyx3) 8 4 (7y2x4z2)(8y5x3z2) (8k27k)( k25k6) (5a23a8b)(2a22a6b) 7x2(5x28x5)(5x8) 5y2( x2y)(6x29y2) 1 ( x28xyx)(9x25xy9x) 5 6 1 (xy9y24)(x2xy y23)

3、 7 3 1 1 (xyy)(xyx2) 6 3 (6y9x9z2)(9y5x6z2) ( k29k)(5k28k6) (3a29a6b)(9a29a6b) 6x2(2x22x9)(2x3) 4y2(2x2y)(6x2 y2) 7 (2x25xyx)(4x27xy4x) 8 1 7 (xy7y23)(x2xy y24) 8 8 8 1 (xyy)(xyx4) 7 8 ( y8x z2)(7y2x4z2) ( k29k)(6k25k1) (2a24a6b)( a22a2b) 8x2(7x29x7)( x7) 4y2(2x2y)(8x26y2) 1 (7x27xyx)(4x28xy3x) 4 7 1 (xy7y22)(x2xy9y21) 6 6