题目内容
计算:
(1)(-2)2-(3-5)-
+2×(-3)
(2)|-2|+(
)-1×(π-
)0-
+(-1)2.
(1)(-2)2-(3-5)-
| 4 |
(2)|-2|+(
| 1 |
| 3 |
| 2 |
| 9 |
(1)原式=4-3+5-2-6
=-2;
(2)原式=2+3×1-3+1
=2+3-3+1
=3.
=-2;
(2)原式=2+3×1-3+1
=2+3-3+1
=3.
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| 1 |
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