Graphs of quadratic functions can be used to solve equations. Example. Draw the graph of \(y = 2x^{2} + 2x – 4\) for values of –3 to 2. Use the graph to solve the equation \(y = 2x^{2} + 2x ...

Learn and revise how to solve quadratic equations by factorising, completing the square and using the quadratic formula with Bitesize GCSE Maths Edexcel.

Quadratic equations are basic to algebra and are the math behind parabolas, ... For example, if a parabola is one ... The graph of a quadratic equation forms a parabola.