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6² - 4(m + 2)(3m) > 0
36 - 12m² - 24m > 0
12m² + 24m - 36 < 0
12(m² + 2m - 3) < 0
12(m + 3)(m - 1) < 0
m = -3 atau m = 1
dengan garis bilangan
{-3 < m < 1}
semoga membantu