Question

If $f(x)=\begin{vmatrix} x^3 & 2x^2+1 & 1+3x \\\[0.3em] 3x^2+2 & 2x & x^3+6 \\\[0.3em] x^3-x & 4 & x^2-2 \end{vmatrix}$ for all $x∈R$, then $2f(0) + f'(0)$ is equal to

Answer 1

The answer is 42.