Solving quadratic equations by factorising

Abstract

In fact, there are an infinite number of equations that have these same roots. The intercept form of a quadratic equation is y = a (x p) (x q) . In the equation, p and q represent the x-intercepts of the graph corresponding to the equation. The intercept form of the equation shown in the graph is y = 2 (x 1) (x + 2) . The x-intercepts of the graph are 1 and -2. The standard form of the equation is y = 2 x 2 + 2x 4.