题目内容
(1)(π-2009)0+
+|
-2|
(2)
-
+
(3)(x-4)2=25
(4)
-3
.
| 12 |
| 3 |
(2)
|
| 28 |
| 700 |
(3)(x-4)2=25
(4)
| ||||
|
| 5 |
(1)原式=1+2
+2-
=3+
;
(2)原式=
-2
+10
=
;
(3)x-4=±5,
∴x=9或-1;
(4)原式=
+
-3
=
+2
-3
=0.
| 3 |
| 3 |
=3+
| 3 |
(2)原式=
| ||
| 7 |
| 7 |
| 7 |
=
| 57 |
| 7 |
| 7 |
(3)x-4=±5,
∴x=9或-1;
(4)原式=
|
|
| 5 |
=
| 5 |
| 5 |
| 5 |
=0.
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