题目内容
把下列各式分解因式
(1)3(x-2)-x(2-x)
(2)a3-a2+
a.
(1)3(x-2)-x(2-x)
(2)a3-a2+
| 1 |
| 4 |
(1)3(x-2)-x(2-x)
=3(x-2)+x(x-2)
=(x-2)(x+3);
(2)a3-a2+
a
=a(a2-a+
)
=a(a-
)2.
=3(x-2)+x(x-2)
=(x-2)(x+3);
(2)a3-a2+
| 1 |
| 4 |
=a(a2-a+
| 1 |
| 4 |
=a(a-
| 1 |
| 2 |
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