What must be added to $y^2+5y-6$ to get $y^3-y^2+3y-2$

Question

$\begin{array}{1 1} y^3+2y^2-2y+4 \\ y^3-2y^2-2y+4 \\ y^3+2y^2+2y+4 \\ y^2+2y+4 \end{array} $