# How do you simplify #[x^-1+y^-1]/[x^-2-y^-2]#?

##### 1 Answer

Jul 25, 2016

#### Answer:

#### Explanation:

This one is interesting in that its set to look tricky but its not really that bad as it seems.

Firs we know that

so lets rearrange this equation

now it turns out that

so we have