Integral tak tentu 3x (x-4)² dx

Rumus umum integral.
Integral ax^n dx = (a/n+1) x^n+1 + C

Integral 3x (x-4) ² dx
Integral 3x (x²-8x+16) dx
Integral 3x³-24x²+18x dx
(3/4) x⁴ - (24/3) x ³ + (18/2) x² +c
(3/4)x⁴- 8x³ + 9x²+ C

Jadikan jawabannya yg terbaik