题目内容
化简:
=______,
=______,
=______.
| a2bc |
| ab |
| x2-4 |
| x2-4x+4 |
| 2x-2 |
| 1-x2 |
| a2bc |
| ab |
| ab(ac) |
| ab |
| x2-4 |
| x2-4x+4 |
| (x+2)(x-2) |
| (x-2)(x-2) |
| x+2 |
| x-2 |
| 2x-2 |
| 1- x2 |
| 2(x-1) |
| (1-x)(1+x) |
| 2 |
| x+1 |
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题目内容
| a2bc |
| ab |
| x2-4 |
| x2-4x+4 |
| 2x-2 |
| 1-x2 |
| a2bc |
| ab |
| ab(ac) |
| ab |
| x2-4 |
| x2-4x+4 |
| (x+2)(x-2) |
| (x-2)(x-2) |
| x+2 |
| x-2 |
| 2x-2 |
| 1- x2 |
| 2(x-1) |
| (1-x)(1+x) |
| 2 |
| x+1 |