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posted by jacky on Saturday, October 31, 2009 at 11:24am.

what is (1+2y)(3+5y)

I presume you want to multiply it out? (1+2y)(3+5y) = 1 * (3+5y) + 2y * (3+5y) = 3 + 5y + 6y * 10y^2 and you can finish

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