tolong jawab in gan ,semoga yh menjawab bnyk pahala

Turunan

P(x) = x³ - 450 x² + 37.500 x
maksimu /min , jika p'(x) = 0
3x² - 900x + 37.500 = 0
x² - 300 x + 12.500 = 0
(x - 250)(x-50) = 0
x = 250 atau x = 50

P(250) = (250)³ - 450(250)² + 37.500(250) = 53.125.000
P(50) = 50³ -450(50)² + 37.500(50) = 875.000

P(x) minimal = 875.000 --> untuk 50 unit