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21-10-2014
Mathematics

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factor this equation 4-49w^2

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21-10-2014

[tex]4-49w^2=\ \ \ \ | use\ fromula\ (a^2-b^2)=(a-b)(a+b)\\\\ 4-49w^2=(2^2-(7w)^2)=(2-7w)(2+7w)\\\\ after\ factorisation: \ 4-49w^2=(2-7w)(2+7w)[/tex]

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