计算:
(1)(-10xy3)·2xy4z;
(2)(-4x)(2x2-2x-1);
(3)0.4x2y·
-(-2x)3·xy3;
(4)-3a
+2b(a2-ab)-2a2(b+3).
(1)(-10xy3)·2xy4z;
(2)(-4x)(2x2-2x-1);
(3)0.4x2y·
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/211a1be5d4f1d3fb8198d0ac20560d26.png)
(4)-3a
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f40fc79a9210781d4cdcc77f12bba5.png)
更新时间:2019-01-26 17:29:24
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【知识点】 计算单项式乘多项式及求值解读