整式的乘法和因式分解计算题.doc

文档介绍：(1) (2) (3)4y·(-2xy3);
(4) (5) (6)
(7) (8)
(9) 10)
(1) (2)
(3) (4)
(5) (6)
(7) (8)
(1) (2)
(3) (4)
(5) (6)
单项式乘多项式
(1) (2xy2-3xy)·2xy; (2) -x(2x+3x2-2); (3) -2ab(ab-3ab2-1);
(4) (an+1-)·ab. (5) -10mn·(2m2n-3mn2). (6) (-4ax)2·(5a2-3ax2).
(7)(3x2y-2xy2)·(-3x3y2)2. (8)7a(2ab2-3b). (9)x(x2-1)+2x2(x+1)-3x(2x-5).
(5ab+3a2b) 11..
:2x(x2﹣x+3) 13.(﹣4a3+12a2b﹣7a3b3)(﹣4a2)
:xy2(3x2y﹣xy2+y) 15.(﹣2ab)(3a2﹣2ab﹣4b2)
1. 2.