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Jawabfungsi kuadrat
y = - 2x² - 8x + 24
a=- 2
b = -8
c = 24
x= -b/2a = - (-8) /2 (-2)
x = 8/-4
x = - 2
y = -2(-2)² - 8(-2) + 24
y = -8 + 16 + 24
y = 32
(x,y) =(-2, 32)