turunan dari y = (1 - x)² (3x + 2)

=2(1 - x) (3x + 2) + (1 - x)^2 (3)
= -6x^2 + 2x + 4 + x^2 - 2x + 1
= -5x^2 + 5

y = (1 - x)^2 (3x + 2)
y = (1 - 2x + x^2)(3x + 2)
y = 3x + 2 - 6x^2 - 4x + 3x^3 + 2x^2
y = 3x^3 - 4x^2 - x + 2

y' = 9x^2 - 8x - 1