题目内容
计算:
(1)
-2×(
)-1+|-3|+(
-1)0
(2)(3
-2
)-(
+2
).
(3)
+
-
(1)
| 4 |
| 1 |
| 2 |
| 2 |
(2)(3
| 6 |
|
| 24 |
|
(3)
| 25x |
|
| 16x |
(1)原式=
-2×2+3+1=2;
(2)原式=3
-2
-2
-
=0.
(3)原式=5
+
-4
=
.
| 4 |
(2)原式=3
| 6 |
| ||
| 6 |
| 6 |
2
| ||
| 3 |
(3)原式=5
| x |
| 3 |
| 2 |
| x |
| x |
| 5 |
| 2 |
| x |
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