题目内容
计算:
(1)
-
×
-
÷
(2)(2
+
)(
-
).
(1)
| 27 |
| 6 |
| 2 |
| 6 |
| 2 |
(2)(2
| 3 |
| 8 |
| 3 |
| 2 |
(1)原式=3
-2
-
=0;
(2)原式=2(
+
)(
-
)
=2×(3-2)
=2.
| 3 |
| 3 |
| 3 |
=0;
(2)原式=2(
| 3 |
| 2 |
| 3 |
| 2 |
=2×(3-2)
=2.
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题目内容
| 27 |
| 6 |
| 2 |
| 6 |
| 2 |
| 3 |
| 8 |
| 3 |
| 2 |
| 3 |
| 3 |
| 3 |
| 3 |
| 2 |
| 3 |
| 2 |