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posted by Meteknesh on Sunday, January 1, 2012 at 11:33pm.
how do you factor a^2-100 completely?
just use the old (a-b)(a+b) = a^2 - b^2 a^2 - 100 = (a+10)(a-10) whew. At first I thought I'd read a^100 - 1. That would have had a few more factors!
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