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December 21, 2014

December 21, 2014

Posted by **Felicity** on Sunday, March 28, 2010 at 8:27pm.

I can't figure out what to do with it... should I expand it out and deal with it or will I get right back to that? I think maybe it's confusing me because it's in a different format, but I'd like some help, thanks.

- Maths -
**bobpursley**, Sunday, March 28, 2010 at 8:37pmThe second is a difference of two squares.

7^2-u^2 where u=2y-w

- Maths -
**Felicity**, Sunday, March 28, 2010 at 9:27pmThank you so much for clarifying, I think it was a little foggy in my mind because it looked different from the others, but now that you say difference of squares, it makes total sense... I'll have to keep that in mind for the test!

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