Factor 196x^2-169y^2

Math
196×2-169y2
Rewrite 196×2 as (14x)2.
(14x)2-169y2
Rewrite 169y2 as (13y)2.
(14x)2-(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.
(14x+13y)(14x-(13y))
Multiply 13 by -1.
(14x+13y)(14x-13y)
Factor 196x^2-169y^2

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