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Verified answer
B²-4ac(-3)²-4(2)(-5)
9-(8)(-5)
9+40
49
Matematika SMP Kelas VIII
2x² - 3x - 5
a = 2; b = -3; c = - 5
b² - 4ac
= (-3)² - 4 . 2 . (-5)
= 9 + 40
= 49