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Verified answer
F(x) = 2x² - 8x + 5nilai minimum pada saat f ' (x) = 0
maka
f'(x) = 0
4x - 8 = 0
x = 2
masukan ke fungsinya
f(2) = 2(2)² - 8(2) + 5
= 8 - 16 + 5
= -3
maka nilai minimumnya -3