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Sehingga:
0 < D
0 < b² - 4ac
0 < (2m-1)² - 4(1)(m² - 3m - 6)
0 < (4m² - 4m + 1) + (-4m² + 12m + 24)
0 < 8m + 25
-8m < 25
Sehingga, berlaku:
m > - 25/8