Y=u^5+3, u=x⁴+2x carilah turunan ketiga ?

Turunan

y = (x⁴ + 2x)^5 + 3

Turunan 1
y' = 5(x⁴ + 2x)⁴ (4x³ + 2)
y' = (20x³ + 10)(x⁴ + 2x)⁴

Turunan 2
y'' = 60x²(x⁴ + 2x)⁴ + 4(20x³ + 10)(x⁴ + 2x)³(4x³ + 2)
y'' = (x⁴ + 2x)³(60x²(x⁴ + 2x) + (80x³ + 40)(4x³ + 2))
y'' = (x⁴ + 2x)³ (380x^6 + 440x³ + 80)

Turunan 3
Buat yg kmu :)