题目内容
(1)计算3-2+(
-
)0-
+|1-3
|
(2)化简(a-2)2+a(a+4).
| 3 |
| 2 |
| 27 |
| 3 |
(2)化简(a-2)2+a(a+4).
(1)原式=
+1-3
+3
-1
=
;
(2)原式=a2-4a+4+a2+4a
=2a2+4.
| 1 |
| 9 |
| 3 |
| 3 |
=
| 1 |
| 9 |
(2)原式=a2-4a+4+a2+4a
=2a2+4.
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