How do you factor $36x^2 - 169y^2$ ?

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Answer 1 · 2015-05-22T06:58:31

We know that $color(blue)(a^2 - b^2 = (a+b)(a-b)$

$36 x^2 - 169y^2 = (6x)^2 - (13y)^2$

$(6x)^2 - (13y)^2 = (6x-13y)(6x+13y)$

How do you factor 36x^2 - 169y^236x^2 - 169y^2?