题目内容
化简题:
(1)
-
+
(2)
+
(3)(
+
)2
(4)
-
.
(1)
| 5 |
| 125 |
| 45 |
(2)
|
|
(3)(
| 2 |
| 6 |
(4)
| ||||
|
| ||||
|
(1)原式=
-5
+3
=-
;
(2)原式=
+
=
;
(3)原式=(
)2+2•
•
+(
)2
=2+4
+6
8+4
;
(4)原式=
-
=2
-3.
| 5 |
| 5 |
| 5 |
=-
| 5 |
(2)原式=
| ||
| 3 |
| ||
| 2 |
=
5
| ||
| 6 |
(3)原式=(
| 2 |
| 2 |
| 6 |
| 6 |
=2+4
| 3 |
8+4
| 3 |
(4)原式=
2
| ||||
|
2
| ||||
|
=2
| 15 |
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