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> 计算:-14+(12)-2+12+(1-2)0-2tan60°.-数学
计算:-14+(12)-2+12+(1-2)0-2tan60°.-数学
题目简介
计算:-14+(12)-2+12+(1-2)0-2tan60°.-数学
题目详情
计算:-1
4
+
(
1
2
)
-2
+
12
+
(1-
2
)
0
-2tan60°.
题型:解答题
难度:中档
来源:不详
答案
原式=-1+4+2
3
+1-2×
3
=4.
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如果x+x-1=3,则x2+x-2的值是()A.9B
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题目简介
计算:-14+(12)-2+12+(1-2)0-2tan60°.-数学
题目详情
答案
=4.