tomy143003 tomy143003

22-12-2016
Mathematics

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Factor the polynomial 25x^2-20xy + 4y^2

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apologiabiology apologiabiology

22-12-2016

recognize that (a-b)^2=a^2-2ab+b^2
so
(5x)^2-2(2)(5)xy+(2y)^2=(5x-2y)^2

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