(2х-7y)(2x+7y)+(2x-7y)(7y-2x)

Question

(2х-7y)(2x+7y)+(2x-7y)(7y-2x)

Answer 1

I hope this helps you

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Answer 2

=(2x-7y)((2x+7y)+(7y-2x))=(2x-7y)(2x+7y+7y-2x)=(2x-7y)14y=28xy-98y^2