Mathematics for IGCSE & O level - Equations (Section 4 - No. 24)
What does 'completing the square' method involve to solve a quadratic equation?
Add and subtract the square of half the coefficient of x.
Factorize the quadratic expression to obtain two linear factors.
Divide the equation by the coefficient of x².
Rearrange the terms to group x terms.
Förklaring
Completing the square requires manipulating the expression to create a perfect square trinomial.