Mathematics for IGCSE & O level - Equations (Section 7 - No. 44)
What is a characteristic of equations solved by completing the square?
The coefficient of x² must be 1.
The equation must have three terms.
The equation must be equal to 0.
All of the above
คำอธิบาย
Completing the square works well when coefficient of x² is 1 and all the terms are on one side.