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# simple fraction watch

1. Im having trouble simplifying
Code:
```a+b
-----------
a^2 - b^2```
can someone walk me through, ta?
2. (a+b)/(a+b)(a-b)

cancel the (a+b) to give 1/(a-b)

Basically you need to factorise the bottom, and it is a difference of two squares so it is just (a+b)(a-b) and then you cancel
3. difference of two squares, ofcourse, ta

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