What is the quadratic formula?

For ax² + bx + c = 0, x = (-b ± √(b²-4ac)) / 2a. The discriminant (b²-4ac) determines if roots are real or complex.

What if the discriminant is negative?

You get two complex roots. This tool shows them in a + bi form.

Yes. All tools on QuickFreeTools are free with no signup.

Solve quadratic equations ax² + bx + c = 0 using the quadratic formula. Get real and complex roots.

Solve ax² + bx + c = 0. Enter coefficients:

What is the quadratic formula?: For ax² + bx + c = 0, x = (-b ± √(b²-4ac)) / 2a. The discriminant (b²-4ac) determines if roots are real or complex.
What if the discriminant is negative?: You get two complex roots. This tool shows them in a + bi form.
Is this tool free?: Yes. All tools on QuickFreeTools are free with no signup.

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