Embed the Quadratic Formula Calculator

Both roots of ax² + bx + c = 0 from the quadratic formula, with the discriminant that says in advance how many real roots there are. Set the values it should open on, then copy the iframe. Your visitors can change them; the widget recomputes against Rule Calculator and never touches your page.

Opening values

Set what the widget shows before anyone touches it. Leave a field as it is and it stays out of the URL.

a (x² coefficient)b (x coefficient)c (constant)Height — 520px

Preview

Paste this

<iframe src="https://rulecalculators.com/embed/quadratic-formula" width="100%" height="520" style="border:1px solid #e5e5e5;border-radius:12px" loading="lazy" title="Quadratic Formula Calculator"></iframe>

Free for commercial use. The one condition is the credit link inside the widget, which is how the calculator stays free. Want the numbers in your own markup instead? The same calculator is a JSON endpoint, or see the full Quadratic Formula Calculator page with its sources and working.