Mathematics for IGCSE & O level - Equations (Section 1 - No. 2)
When solving a quadratic equation, when would you use the completing the square method?
Only if the equation is easily factorable.
When the equation has no constant term.
To rewrite the equation in a perfect square form.
To determine the leading coefficient
Paliwanag
Completing the square transforms the equation into a form where you can isolate the variable more easily.