If f(x)=x2f(x) = x^2f(x)=x2 and g(x)=x3g(x) = x^3g(x)=x3, what is ddx[f(x)g(x)]\frac{d}{dx}[f(x)g(x)]dxd[f(x)g(x)]?
5x45x^45x4
6x56x^56x5
2x2+3x32x^2 + 3x^32x2+3x3
x5x^5x5