整式的乘法(计算题2) 1. . 2(4)(2a+3b)﹣(2a﹣b)(2a+b) (5)(2x﹣5)(2x+5)﹣(2x+1)(2x﹣3) 2. . 3.计算 (1)20070+2﹣2﹣( )2+2009 (2)(﹣2ab)(3a2﹣2ab﹣b2) (3)(2x2)3﹣6x3(x3+2x2﹣x) (6) (7)(x+1)(x+3)﹣(x﹣2)2 (8)(a+b+3)(a+b﹣3) (9)(9x2y﹣6xy2+3xy)÷( 3xy) 4.化简: 5.﹣2ab•(a2b+3ab2﹣1) 6.计算. (1)(30x4﹣20x3+10x)÷10x (2)(32x3y3z+16x2y3z﹣8xyz)÷8xyz (3)(6an+1﹣9an+1+3an﹣1)÷3an﹣1 . 7.(25x3y﹣10x2y2+15xy3)÷(﹣5xy) 8.(﹣x﹣y)6÷(x+y)3 . 本文来源:https://www.wddqw.com/doc/5dbfef3ea75177232f60ddccda38376baf1fe0bd.html