(2x-7y)^2 - (3x-2y)^2

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1 Answer

Difference of two squares:

(2x-7y-3x+2y)(2x-7y+3x-2y)=-(x+5y)(5x-9y)=

-(5x2+16xy-45y2)=-5x2-16xy+45y2.

by Top Rated User (1.2m points)

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