Completing the square questions are becoming more popular with GCSE maths, as the technique can be useful if you’re intending to study at a higher level. The main use is factorising and finding out the maximum and minimum values of a quadratic equation. Once you’re familiar with the method, completing the square becomes quite straightforward.
This video is a reminder of every type of GCSE maths question for completing the square, and is aimed at around grade 8/9.
0:00 Intro
0:30 General questions
8:55 Working with fractions
17:48 Coefficient of x squared
26:14 Solving in surd form
Here’s the questions: QT Completing the Square
Here’s the answers: QT Completing the Square ANSWERS
Top Tips!
● It’s just another way of factorising (if the equation is shown as equal to zero), although most questions will solve to ‘irrational roots’ meaning something including a plus or minus square root
● It’ll only work with a single value of x squared. Some questions will need you to divide through first.
● Always make sure you balance the equation if you’re factorising
● Some questions might involve fractions and you’ll need to check your calculations – decimals are not really used in these types of calculations
If you’d like to ask for any more detail, or you’re not sure about anything, please do ask a question in the comments section.
All best with your studies
Watch on YouTube
Completing the Square – Every Question for GCSE
I’d really appreciate a like, if you found it useful! If you subscribe to the channel, you’ll also be notified of new uploaded videos.
Here’s some earlier videos that might also be of interest:
Completing the square – solve in surd form GCSE maths level 8
Complete the square – solving in surd form GCSE maths question level 8
Completing the square – solve in surd form question GCSE maths level 8
Here’s other posts that also might be of interest:
Foundation GCSE Mocks Practice Quick Test
Summer GCSE Revision; Keep Building Your Skills
GCSE Maths Questions; Last Minute Revision
Edexcel GCSE Revision Maths June 2018 Paper 1
Edexcel Maths Higher Paper 2 November 2018
AQA GCSE Maths Higher 2018; Paper 1
Edexcel GCSE Maths Foundation Paper 2017; Paper 3
Edexcel GCSE maths foundation November 2018 paper 2
Speed Distance Time; mid level GCSE mathematics questions
How to factorise equations containing algebra terms
Simplify an algebra fraction using factorising
Expand brackets and simplify; mid-level GCSE maths algebra
Leave a Reply