Integral -5x (3xpangkat 3 - 4x+5 ) dx

= integral -5x (3x³ - 4x + 5) dx
= integral -15x⁴ + 20x² - 25x dx
= (-15/5)x^5 + (20/3)x³ - (25/2)x² + c
= -3x^5 + (20/3)x³ - (25/2)x² + c