题目内容
计算下列两题:
(1)(3
-2
)2-(3
+2
)2
(2)(2-3
)×
÷
.
(1)(3
| 2 |
| 3 |
| 2 |
| 3 |
(2)(2-3
|
| 6 |
| 2 |
(1)原式=(3
-2
-3
-2
)(3
-2
+3
+2
)
=(-4
)×6
=-24
,
(2)原式=(2-
)×
×
=(2-
)×
=2
-3.
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
| 2 |
| 3 |
=(-4
| 3 |
| 2 |
=-24
| 6 |
(2)原式=(2-
| 3 |
| 6 |
| ||
| 2 |
=(2-
| 3 |
| 3 |
=2
| 3 |
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