题目内容
计算:
(1)-
+(-
)+
+(-
)
(2)(-2)2-|-6|+2-3×(-
).
(1)-
3 |
4 |
1 |
2 |
5 |
6 |
4 |
3 |
(2)(-2)2-|-6|+2-3×(-
1 |
3 |
(1)原式=-
-
+
-
=-
-
=-
;
(2)原式=4-6+2+1
=-2+3
=1.
3 |
4 |
1 |
2 |
5 |
6 |
4 |
3 |
=-
5 |
4 |
1 |
2 |
=-
7 |
4 |
(2)原式=4-6+2+1
=-2+3
=1.
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