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2x² -5x -3 = 0
a = 2
b = -5
c = -3
D = b² -4ac
= (-5)² -4(2)(-3)
= 25 +24
= 49
Itu jawabannya
a = 2
b = -5
c = -3
D = b² - 4ac
= (-5)² -4(2)(-3)
= 25 + 24
= 49