kerjakan yg dibulatin ya kak

f(x) = (x^2 + 2x + 3)(x^2 + 3x - 4)
= x^4 + 5x^3 + 5x^2 - 2x - 12

f'(x) = 4 • x^4-1 + 3 • 5x^3-1 + 2 • 5x^2-1 - 2x^1-1 - 12
= 4x^3 + 15x^2 + 10x -14