F'(x) = 4(-4x^3+1)^3 (-12x^2) - 5(2-x)^4= -48(-4x^3+1)^3*x^2 - 5(2-x)^4= -48x^2(-64x^9 + 48x^6 - 12x^3 + 1) - 5(16-32x+24x^2-8x^3+x^4)= 3072x^11 - 2304x^8 + 576x^5 - 48x^2 - 80 + 160x - 120x^2 + 40x^3 - 5x^4
F'(x) = 4(-4x^3+1)^3 (-12x^2) - 5(2-x)^4
= -48(-4x^3+1)^3*x^2 - 5(2-x)^4
= -48x^2(-64x^9 + 48x^6 - 12x^3 + 1) - 5(16-32x+24x^2-8x^3+x^4)
= 3072x^11 - 2304x^8 + 576x^5 - 48x^2 - 80 + 160x - 120x^2 + 40x^3 - 5x^4