Is this the right place to go to ask how to solve these types of polynomials? If not, just point me to which board i need to go to.
> the image file is too large, so pic unrelated.
> my polynomial is X^4 + 15X^2 - 16 = 0.
> I already found two of the four possible answers on accident; 1, & -1.
Any help or direction to a board that can help is appreciated!