题目内容
计算：(a-
)÷(x-
)=______．
| x2 |
| a |
| a2 |
| x |
(a-
)÷(x-
)
=
÷
=
×
=-
．
故答案为：-
．
| x2 |
| a |
| a2 |
| x |
=
| a2-x2 |
| a |
| x2-a2 |
| x |
=
| a2-x2 |
| a |
| x |
| a2-x2 |
=-
| x |
| a |
故答案为：-
| x |
| a |
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