y' = (8x^3 - 2)'(3 + 2x) + (8x^3 -2)(3 + 2x)' = 24x^2 (3 + 2x) + 16x^3 - 4 = 72x^2 + 48x^3 + 16x^3 - 4 = 64x^3 + 72x^2 - 4
y' = (8x^3 - 2)'(3 + 2x) + (8x^3 -2)(3 + 2x)' = 24x^2 (3 + 2x) + 16x^3 - 4 = 72x^2 + 48x^3 + 16x^3 - 4 = 64x^3 + 72x^2 - 4