quadratic equation

It can be in the form of $y = ax^2 + bx + c$ .
The name Quadratic comes from “quad” mean-ing square, because the variable gets squared (like $x^2$ ).
It is also called an “Equation of Degree 2” (be-cause of the “2” on the $x$ )

Rod Pierce, "Quadratic Equations", Math Is Fun, 15 Apr 2000 (), url https://www.mathsisfun.com/algebra/quadratic-equation.html [20241222].