quadratic equation

nounMathematics.

an equation containing a single variable of degree 2. Its general form is ax2 + bx + c = 0, where x is the variable and a, b, and c are constants (a ≠ 0).

Origin of quadratic equation

First recorded in 1680–90

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

As a teen, Randy had painted a submarine, an elevator door and the quadratic equation on the walls of his childhood bedroom.
Randy Pausch Keeps Talking | Jeffrey Zaslow | October 8, 2008 | THE DAILY BEAST
For more exact work, the new concentrations of the three components may be found by solving a simple quadratic equation.
The Elements of Qualitative Chemical Analysis, vol. 1, parts 1 and 2. | Julius Stieglitz
The ordinary schoolboy would correctly treat this as a quadratic equation.
Amusements in Mathematics | Henry Ernest Dudeney
An advantage gained was that every quadratic equation, and not some quadratics only, could be spoken of as having two roots.
Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 6 | Various
quadratic equation, an equation involving the square of the unknown quantity.
The Nuttall Encyclopaedia | Edited by Rev. James Wood

All I ask is to live simply and sensibly, but instead of that my existence is transformed into a quadratic equation.
Mr. Prohack | E. Arnold Bennett

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