题目内容
分解因式:
(1)4x2-9y2
(2)a4-
a2b2+
b4.
(1)4x2-9y2
(2)a4-
| 1 |
| 2 |
| 1 |
| 16 |
(1)原式=(2x+3y)(2x-3y);
(2)原式=(a2)2-2a2(
)+(
)2=(a2-
)2=(a+
)2(a-
)2.
(2)原式=(a2)2-2a2(
| b2 |
| 4 |
| b2 |
| 4 |
| b2 |
| 4 |
| b |
| 2 |
| b |
| 2 |
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