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= x(2x - 3y) + 5y(2x - 3y)
= 2x² - 3xy + 10xy - 15y²
= 2x² + 7xy - 15y²
=x(2x-3y) + 5y (2x-3y)
=2x kuadrat - 3xy + 10xy - 15y kuadrat
= 2x kuadrat - 15y kuadrat + 7xy