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1、单项式与多项式1 单项式与多项式相乘随堂练习题一、选择题1计算（-3x）（2x2-5x-1）的结果是（）A-6 x2-15x2-3x B-6x3+15x2+3x C-6x3+15x2 D-6x3+15x2-1 2下列各题计算正确的是（）A（ab-1）（-4a b2）=-4a2b3-4ab2B（3x2+xy-y2）3x2=9x4+3x3y-y2C（-3a）（a2-2a+1）=-3a3+6a2D（-2x）（3x2-4x-2）=-6x3+8x2+4x 3如果一个三角形的底边长为2x2y+xy-y2，高为 6xy，则这个三角形的面积是（）?A6x3y2+3x2y2-3 xy3 B6x3y2+3xy-3
2、x y3C6x3y2+3x2y2-y2 D6x3y+3x2y24计算 x（y-z）-y（z-x）+z（x-y），结果正确的是（）A2xy-2yz B-2yz Cxy-2yz D2xy-xz 二、填空题5方程 2x（x-1）=12+x（2x-5）的解是 _6计算：-2ab（a2b+3ab2-1）=_7已知 a+2b=0，则式子 a3+2ab（a+b）+4b3的值是 _三、解答题8计算：单项式与多项式2（12x2y-2xy+y2）（-4xy）-ab2（3a2b-abc-1）（3an+2b-2 anbn-1+3bn）5anbn+3（n 为正整数，n1）-4x2（12xy-y2）-3x （xy2-2x
3、2y）9化简求值：-ab（a2b5-ab3-b），其中 ab2=-2。四、探究题10请先阅读下列解题过程，再仿做下面的题已知 x2+x-1=0，求 x3+2x2+3 的值解：x3+2x2+3=x3+x2-x+x2+x+3=x（x2+x-1）+x2+x-1+4=0+0+4=4 如果 1+x+x2+x3=0，求 x+x2+x3+x4+x5+x6+x7+x8的值文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y1
4、0Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文
5、档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ
6、8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7
7、B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 H
8、X6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2
9、W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 Z
10、V7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5单项式与多项式3(参考答案）1 B 2 D 3 A 4 A 5 x=4 6 -2 a3b2-6 a2b3+2ab 7 0 8 -2x3y2+8x2y2-4xy3；-3 a3b3+a2b3c+ab2；15a2n+2bn+4-10a2nb2n+2+15anb2n+3；4x3y+x2y2 9 10 10 0 文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10
11、F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1
12、 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4
13、H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3
14、 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8
15、Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z
16、5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5文档编码:CZ8P10F7B7L1 HX6R4H2W5L3 ZV7E8Y10Z3Z5