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= 5x(2y + 6) + 2(2y + 6)
= 10xy + 30x + 4y + 12
B) (5x - 4)(x - 12)
= 5x(x - 12) - 4(x - 12)
= 5x² - 60x - 4x + 48
= 5x² - 64x + 48