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10-05-2016
Mathematics

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(2x+1)(2x-1) find the product

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apologiabiology apologiabiology

10-05-2016

difference of 2 perfect squares
a^2-b^2=(a-b)(a+b)
recognize that

(2x+1)(2x-1)
(a+b)(a-b)
therefor
product is
(2x)^2-(1)^2=
4x^2-1

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