Solving equations with light. (Courtesy: iStockphoto/Henrik Jonsson) 3x + y = 2. x + 3y = 0. It’s the sort of easy maths problem that you can work out in a few minutes using pencil and paper, but ...

Many former algebra students have painful memories of struggling to memorize the quadratic formula. A new way to derive it, overlooked for 4,000 years, is so simple it eliminates the need.

Do this, and you’ll get the quadratic formula. (See the exercises below for more details.) This isn’t as easy as humming a children’s tune, but it demonstrates the important algebraic and geometric ...

Imagine that there's an app with which you can simply scan a complicated maths problem with your smartphone camera and it spits out the solution for you. Well, it's call Photomath, and it exists.

- Simple linear regression model – worked example. Let’s say we are interested in examining the relationship between blood pressure (BP) and age (in years) in a hospital ward. We can start by plotting ...

Learn about and revise quadratic equations by factorising, completing the square and using the quadratic formula with GCSE Bitesize OCR Maths.