题目内容
4x2-4ax+a2-b2=0.
原式可化为:x2-ax+
=0,
整理得,x2-ax+(
)2-(
)2=-
即:(x-
)2=
,
解得x1=
或x2=
.
| a2-b2 |
| 4 |
整理得,x2-ax+(
| a |
| 2 |
| a |
| 2 |
| a2-b2 |
| 4 |
即:(x-
| a |
| 2 |
| b2 |
| 4 |
解得x1=
| a+b |
| 2 |
| a-b |
| 2 |
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题目内容
| a2-b2 |
| 4 |
| a |
| 2 |
| a |
| 2 |
| a2-b2 |
| 4 |
| a |
| 2 |
| b2 |
| 4 |
| a+b |
| 2 |
| a-b |
| 2 |