Maths lessons
Let students check homework answers next to the explanation.
Content / widget · Elementor module
Quadratic Root Calculator Widget Plugin for Elementor
Let visitors solve ax² + bx + c = 0 with an exact discriminant, real or complex roots, exact forms and the vertex, live in the browser.
Included in All AccessClassic Elementor widgetFrom $29 USD / year
Complementor / Quadratic root calculatorProduct preview
Text, style and layout controls inside Elementor
01 / Interactive demonstration
Try it
These are the actual published outputs of the widget. Change a, b or c in any of them; the roots update as you type.
02 / Inside WordPress
Quadratic root calculator controls in Elementor
Content sets the decimal places, exact forms, the vertex, starting values for a, b and c, and every label and message. The Style tab covers the fields, the result box, the labels and the Clear button.
03 / Website use cases
Where to use quadratic root calculator
Students and teachers often want to check a quadratic equation quickly, but many calculators stop at “no real roots”, hide the discriminant or show rounding noise where a root should repeat. Quadratic root calculator runs on your own page: visitors type a, b and c and see the equation, the exact discriminant, the real or complex roots, an exact form such as (3 ± √5) / 2 and the vertex, as they type. When a is 0 it solves the linear equation instead. Nothing is sent anywhere.
Revision sites
Show how the discriminant decides the kind of roots.
Tutoring pages
Give learners a calculator that shows exact answers.
04 / Installation and setup
How to add a quadratic root calculator in Elementor
Start with Complementor installed and your license connected. Enable this module in the WordPress library, then configure it in Elementor.
Install Complementor, connect your license and enable Quadratic root calculator in the Complementor library.
Add the widget to a page.
Choose the decimal places and whether exact forms and the vertex are shown.
Optionally enter starting values for a, b and c.
Style it and try an equation.
05 / Content and style controls
Customize quadratic root calculator in Elementor
Configure the settings available for this module to suit the page you are building.
Live roots while typing.
Exact discriminant b² − 4ac.
Real and complex roots.
Exact fractions and root forms.
Vertex of the parabola.
Linear case when a is 0.
06 / Choose the right approach
Quadratic root calculator and Elementor alternatives
Compare the existing Elementor workflow with this Complementor module before choosing your setup.
A graphing calculator
Shows the curve but often only decimal roots.
Online equation solvers
Take visitors off your page, often with adverts.
07 / Requirements and compatibility
Quadratic root calculator compatibility with Elementor
- Requires Elementor; works without WooCommerce.
- Solves quadratic and linear equations only.
- Does not draw a graph or show working steps.
Complementor uses classic Elementor APIs. Atomic-native controls are not implemented. Check your theme, cache and integrations on a staging site before release.
08 / Common setup problems
Troubleshoot quadratic root calculator
Check these settings if the published page behaves differently from the editor.
Why is there no exact form?
Rational roots are shown as fractions beside the root, and terminating decimals need no exact form.
Why does an empty box give a result?
An empty box counts as 0, so x² − 4 can be entered with b left empty.
Why is my number refused?
Each coefficient is limited to 30 significant digits between 10^-50 and 10^50.
Why are the roots in scientific notation?
Very large or very small values are shown that way so no digits are hidden.
Quadratic root calculator plugin questions
Does it need Elementor Pro?
No. It works with the free version of Elementor.
Does it show complex roots?
Yes. A negative discriminant gives two complex roots written as p ± qi.
Is anything sent to a server?
No. Calculation happens in the visitor's browser and nothing is saved.
Is it accessible?
Yes. The boxes are labelled and the kind of solution is announced to screen readers.
Does it need JavaScript?
Yes. Without it a short message is shown instead.
10 / Annual All Access subscription
Get quadratic root calculator with Complementor
This module is included with all 1007 current Complementor solutions. Choose your production website allowance; every plan includes the same modules.
One website
$29USD / year
- All 1007 current modules
- Plugin downloads and updates for one year
- New releases during the paid term
- Product support
Renews at $29 USD each year.
A few websites
$49USD / year
- All 1007 current modules
- Plugin downloads and updates for one year
- New releases during the paid term
- Product support
Renews at $49 USD each year.
More websites
$99USD / year
- All 1007 current modules
- Plugin downloads and updates for one year
- New releases during the paid term
- Product support
Renews at $99 USD each year.
Applicable taxes extra. Annual subscriptions renew automatically unless canceled in your customer account. Elementor Pro is required for Exclude current post. Read the terms and 14-day technical-issue refund policy.