turunan pertama dari f(x)=(4x²-5)(3x+2)

f'(x) = U'.V + U.V'
U : 4x²-5
U': 8x

V : 3x+2
V' : 3

f'(x) = (8x)(3x+2) + (4x²-5)(3)
f'(x) = 24x²+16x+12x²-15
f'(x) = 36x²+16x-15