So I found the characteristic equation of a matrix, and I know the roots of the equation are supposed to be the eigenvalues. However, my equation is: [tex]\lambda^3-2\lambda^2[/tex] I have double checked different row expansions to make sure this answer is correct. So don't worry about how I came to get that equation. I'm just not sure how to get roots from this. Would it be: [tex]\lambda^2(\lambda-2)[/tex] So that the roots are 0 and 2? Basically I have trouble with cubic roots, I guess this is less of a question about eigenvalues than it is about cubic roots. Thanks.