#### really lost

##### New member

- Joined
- Jul 19, 2005

- Messages
- 10

5a-5b-a^2+b^2 4a^2-b^2

------------------ x ---------------

4a^2-4ab+b^2 2a^2-1ab-b^2

so i totally understand that like you get an answer that looks like this

( ) ( ) ( ) ( )

----------------------------------- ------------------------------

( ) ( ) ( ) ( )

what i dont know is how to factor the first one because there are 4 different things and i didnt learn that and then what goes in between the two fractions? is it a multiplication or a plus sign?

2 2

5a-5b-a +b

(5 ) (a ) thats all i know