Subtract the sum of (3xy - x^2y^2) and (3x^2y^2 + xy - 5) from (-15xy + x^2y^2 + 7).
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Step-by-step explanation:
(-15xy + x^2y^2 + 7) - [(3xy - x^2y^2) + (3x^2y^2 + xy - 5)]
= (-15xy + x^2y^2 + 7) - (4xy + 2x^2y^2 - 5)
= -19xy - x^2y^2 + 12
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