题目内容
计算
(1)
-3
+
(2)(3-2
)(1+
)
(3)(
)2+(
)2-1
(4)(
+
)2-(
-
)2
(1)
| 50 |
| 8 |
| 18 |
(2)(3-2
| 13 |
| 13 |
(3)(
| ||
| 2 |
| ||
| 2 |
(4)(
| 5 |
| 2 |
| 5 |
| 2 |
(1)原式=5
-6
+3
=2
;
(2)原式=3+3
-2
-26=
-23;
(3)原式=
+
-1=3-
-1=2-
;
(4)原式=(
+
+
-
)(
+
-
+
)=2
×2
=4
.
| 2 |
| 2 |
| 2 |
| 2 |
(2)原式=3+3
| 13 |
| 13 |
| 13 |
(3)原式=
6-2
| ||
| 4 |
6-2
| ||
| 4 |
| 5 |
| 5 |
(4)原式=(
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 5 |
| 2 |
| 10 |
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