题目内容
计算
(1)
+
+(
)2+(-1)2012
(2)分解因式:a3-a2b+
ab2.
(1)
|
| 3 | -27 |
| 2 |
(2)分解因式:a3-a2b+
| 1 |
| 4 |
(1)原式=
-3+2+1
=
;
(2)原式=a(a2-ab+
b2)
=a(a-
b)2.
| 1 |
| 9 |
=
| 1 |
| 9 |
(2)原式=a(a2-ab+
| 1 |
| 4 |
=a(a-
| 1 |
| 2 |
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| 9 |
| 1 |
| 9 |
| 1 |
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| 1 |
| 2 |