Maths!!F.3(Laws of Indices)!!

123

2009-09-16 4:39 am

Simplify.
x^-2 - y^-2
--------------
x^-1 - y^-1

回答 (1)

用戶7639

2009-09-16 4:55 am

✔ 最佳答案

As follows:

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