[lit-ideas] Don't Laugh (Math)
- From: Erin Holder <erin.holder@xxxxxxxxxxx>
- To: lit-ideas@xxxxxxxxxxxxx
- Date: Fri, 23 Jun 2006 15:35:24 -0400
OK, who can explain to me how to solve this:
If x^2+2xy+y^2 = 9 then (x+y)^4 = ?
I know the answer is "81", I just don't know how to get it. It's starting to
frustrate me. I haven't done this stuff in almost ten years, and I can't for
the life of me remember how to go about it (although I seem to be getting the
hang of some of the other ones...?)
Erin
TO
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