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计算:-2+(π-1)0+tan60°-; (10分)
计算:-2+(π-1)0+tan60°-; (10分)
计算:
-2
+(π-1)
0
+tan60°-
; (10分)
答案
见解析
解析:原式=2
-
+1+
-
………………7分
=3
………………10分
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