Solve ax² + bx + c = 0 with real or complex roots, plus the discriminant, vertex and axis of symmetry — with step-by-step work.
D > 0 gives two real roots, D = 0 one, D < 0 a conjugate pair.
Know immediately how many roots to expect.
Parabola features computed automatically.
Full substitution into the quadratic formula shown.
Explore algebra and equation solvers.