题目内容
计算题:
(1)(3-2
)(3+2
)
(2)
(3)2
×
+
÷5
(4)(
-
)2.
(1)(3-2
| 2 |
| 2 |
(2)
| ||||
|
(3)2
| 12 |
| 1 |
| 4 |
| 3 |
|
| 2 |
(4)(
| 3 |
| 2 | ||
|
(1)原式=9-8=1;
(2)原式=
=3;
(3)原式=4
×
+
×
=3+
;
(4)原式=3-2×
×
+
=3-4+
=
.
(2)原式=
2
| ||||||
2
|
(3)原式=4
| 3 |
| 1 |
| 4 |
| 3 |
| ||
| 3 |
| 1 | ||
5
|
| ||
| 30 |
(4)原式=3-2×
| 3 |
| 2 | ||
|
| 4 |
| 3 |
| 4 |
| 3 |
| 1 |
| 3 |
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