Quadratic Functions
Quadratic Equations - Solution by the Quadratic Formula
Some quadratic equations cannot be solved by factorising and so an alternative method is the quadratic formula. This tutorial shows you when to use it, clues given in a question and common mistakes that are made.
Working out the exact value on a Casio fx-85ES
More Edexcel C1 Core Maths Tutorials
Popular text books, revision guides and study aids for Edexcel C1 Core Maths