Learn how to write Quadratic Expressions in Completed Square form

Curve Sketching

  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

The more complex form – a number in front of the X squared term – requires careful working

Practice both 

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