simplify (2x + 3y ) (3x –y) –(x -4y) ( 4x –3y)
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Step-by-step explanation:
(6x^2 +9xy-2xy-3y^2)-(4x^2-16xy-3xy+12y^2)
=(6x^2+7xy-3y^2)-(4x^2-19xy+12y^2)
=6x^2+7xy-3y^2-4x^2+19xy-12y^2
=2x^26xy-15y^2
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