BBC

Algebraic expressions - Edexcel Factorising quadratics

In a quadratic expression, the highest power of \(x\) is \(x^2\). Factorise \(x^2 + 7x + 10\). To factorise this expression, find two numbers that have a product of +10 and a sum of +7. There are a ...
BBC

Algebraic expressions - Edexcel Quadratics when the coefficient of x² ≠ 1 - Higher

Discover the updated revision resources for GCSE Maths: Factorising quadratics when the coefficient a > 1, with step-by-step slideshows, quizzes, practice exam questions, and more! Quadratic ...
The New York Times

This Professor’s ‘Amazing’ Trick Makes Quadratic Equations Easier

Looking for the answers to ax² + bx + c = 0? A mathematician has rediscovered a technique that the ancient Babylonians used. By Kenneth Chang and Jonathan Corum The quadratic equation has frustrated ...