(1)计算(―3) 2 ― +(π―4) 0 ―(― ) ―2 ;
1个回答
解题思路:
(1)原式
=
9
―
2
+
1
―
4
=
4
(2)原式
=
+
⋅
―
1
=
1
(1)4 (2)1
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