Learn how to write Quadratic Expressions in Completed Square form

 Key Points

Completing the square is a type of factorising for quadratic expressions

You must learn what the completed square form looks like

There are two methods of completing the square – one basic and one more complex

The basic form should be a one step process

With a number in front of the X squared term the working is trickier

Practice both 

Learn more about our ALGEBRA 1 course here