题目内容
计算:
(1)
+
-(-2)3×
(2)(
+1)2-(
-1)2.
(1)
| 3 | -8 |
| 0.1-2 |
| 3 | 0.064 |
(2)(
| 3 |
| 3 |
(1)原式=-2+10+8×0.4=-2+10+3.2=11.2;
(2)原式=(
+1+
-1)(
+1-
+1)=2
×2=4
.
(2)原式=(
| 3 |
| 3 |
| 3 |
| 3 |
| 3 |
| 3 |
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题目内容
| 3 | -8 |
| 0.1-2 |
| 3 | 0.064 |
| 3 |
| 3 |
| 3 |
| 3 |
| 3 |
| 3 |
| 3 |
| 3 |