Factor 196x^2-169y^2

Rewrite 196×2 as (14x)2.
Rewrite 169y2 as (13y)2.
Since both terms are perfect squares, factor using the difference of squares formula, a2-b2=(a+b)(a-b) where a=14x and b=13y.
Multiply 13 by -1.
Factor 196x^2-169y^2

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