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Cant get my head around this...

Name: Anonymous 2007-08-29 21:08 ID:xqJYApfe

It's probably something simple that I'm missing, but anyway...

sqrt(u - 3) = u - 5

the answer is supposedly u = 7
however, it's important to know why, so... well, why?

Name: Anonymous 2007-08-29 21:28 ID:xqJYApfe

>>5

Where does that -10u come from?
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