An easy to use online calculator and solver for quadratic equations of the form
a x2 + b x + c = 0
The calculator uses the quadratic formulas.
x 1 = [- b + √D ] / 2a and x 2 = [- b - √D ] / 2a
to calculate the solutions of the quadratic equation. The discriminant D given by
D = b 2 - 4ac
The solutions given by this calculator may be real or complex numbers. In the case of real numbers, the imaginary part is equal to zero.
Use the Calculator to Solve Quadartic Equations
1 - Enter the coefficients a, b, c and the number of decimal places desired as real number and press "Solve". This calculator can solve quadratic equations with real and complex solutions. The output boxes on the right gives the imaginary parts.
More References and links
Proof of quadratic formulas.
Step by Step Quadratic Equation Solver
Maths Calculators and Solvers.
Geometry Calculators and Solvers.