How to solve quadratic equation online

Quadratic equation in general form:

ax²+bx+c=0

has a solution:

(x₁, x₂) = (-b±√(b²-4ac))/2a,

where both roots x1, x2 could be Real or complex ones, containing the Imaginary part.

If the first coefficient of quadratic equation is equal 1 (which could be achieved by simply dividing all terms by a), then the equation could be re-written in its canonic form as:

(note that B= b/a and C=c/a) and the solution is simplified as following:

(x₁, x₂) = -B/2±√((B/2)²-C)

Quadratic equations could be solved using traditional school math tools of trade like “paper-pencil-calculator”, but currently there is a better “keyboard-mouse-browser” alternative. There is plenty of free quadratic equation solvers available online, which provide the accuracy and performance hardly achievable on the commercial hardware counterparts. Online web-based calculators present a cost-effective and environmentally-friendly solution, reducing the solid waste and carbon footprint of public education.

To solve the quadratic equation online follow several easy steps outlined below:

1. Open your Web Browser and navigate it to the quadratic equation solver web page (see the sample screenshot attached to the article)
2. Enter the numeric coefficients a, b and c into corresponding text boxes, watermarked as A, B and C. Note that if the text box A is left empty, then system will automatically assign number 1 to A.
3. Click on the "solve" button located at upper-right corner to get the results for x₁and x₂