svralvarez14 svralvarez14

16-12-2015
Mathematics

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How do I factor y^2-16

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apologiabiology apologiabiology

16-12-2015

this is a difference of 2 perfect square so if we have
a^2+b^2=(a-b)(a+b)
16=4^2
y^2-4^2=(y-4)(y+4)

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