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Simplify: (3x + 2y)(4x + 3y) - (2x - y)(7x - 3y)

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Simplify:

(3x + 2y)(4x + 3y) - (2x - y)(7x - 3y)

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Best answer

12x2 + 9xy + 8xy

= 12x2 + 9xy + 8xy + 6y2 – 14x2 + 6xy + 7xy – 3y2

= - 2x2 + 30xy + 3y2

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