Tolong dijawab ya ....

Bab Differensial
Matematika SMA Kelas XI

f(x) = (5x - 3) (2x² + 1)
f(x) = 10x³ + 5x - 6x² - 3
f'(x) = 3 . 10x² + 5 - 2 . 6x
f'(x) = 30x² - 12x + 5

jawabannya C