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> 计算:(1)18-212-1432(2)a2-128a-2a.-数学
计算:(1)18-212-1432(2)a2-128a-2a.-数学
题目简介
计算:(1)18-212-1432(2)a2-128a-2a.-数学
题目详情
计算:
(1)
18
-2
1
2
-
1
4
32
(2)
a
2
-
1
2
8a
-
2a
.
题型:解答题
难度:中档
来源:不详
答案
(1)原式=3
2
-
2
-
2
=
2
;
(2)原式=
2a
2
-
2a
-
2a
=-
3
2a
2
.
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题目简介
计算:(1)18-212-1432(2)a2-128a-2a.-数学
题目详情
(1)
(2)
答案
=
(2)原式=
=-