factorize the following 36 ( x + y) ^2 - 49 (x- 2y)^2
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Answer:
(6x)^2-(7(y-x))^2
(6x)^2-(7(y-x))^2=(6x+7y-7x)(6x-7y+7x)
(6x)^2-(7(y-x))^2=(6x+7y-7x)(6x-7y+7x)=(7y-x)(13x-7y)
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