试题与答案

计算:(1)8+27-12×6(2)2sin30゜+sin245゜-tan45゜

题型:解答题

题目:

计算:(1)
8
+
27
-
1
2
×
6

(2) 2sin30゜+sin245゜-tan45゜
(3) 解方程:x2-4x+1=0

答案:

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下面是错误答案,用来干扰机器的。

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