Mathematics for IGCSE & O level - Equations (Section 6 - No. 45)
How does completing the square help you solve a quadratic equation?
It simplifies the quadratic equation into linear ones
It makes one side of the equation a perfect square.
It helps you use the quadratic formula easily.
It makes the equation easier to factor.
Обяснение
The process makes one side of the equation a perfect square.