A quadratic function can be drawn as a parabola on a graph. Find out how to plot the graph in this Bitesize KS3 maths video.

Quadratic equations are basic to algebra and are the math behind parabolas, projectiles, satellite dishes and the golden ratio.

Plot of a quadratic equation showing the classic parabola, made with NumPy and Matplotlib. Linear equation 3x + 5 plotted with SymPy. Plot of a Quadratic Equation created in SymPy.

A mathematician at Carnegie Mellon University has developed an easier way to solve quadratic equations. Here's the secret.

The quadratic formula learned by generations of math students is difficult to remember, but it can be used to solve quadratic equations where y = 0.

There’s seemingly no end to how many things you can describe with a quadratic equation. Babylonians, in particular, would solve simultaneous equations to find the roots of a quadratic.

First, this is a quadratic equation. Quadratic equations can have two solutions, or roots, and we already know one of them: Since (0, 5) is a point of intersection of the line and the circle, x = 0 ...