Solve x² − 5x + 6 = 0
Standard form is already ax² + bx + c = 0. The discriminant is 1, so there are two real roots: 2 and 3.
Quadratic Equations solutions
Solve degree-2 equations with factoring or the quadratic formula.
Solve x² − 9 = 0
Rewrite as x² = 9, or factor the difference of squares. Both real solutions are required.