Ill mark if its correct. :) a, b,c, or d. answer quick please

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

If the discriminant if a quadratic equation is 4 which statement describes the roots?

Acomposition of transformations maps δxyz to δx"y"z". the first transformation for this composition is , and the second transformation is a 90° rotation about point x'.