Mind map
completing the square
Map content
completing the square
to complete the square you have to write down a squared bracket and then stick a number on the end to complete it
- x² + 12x - 5 = (x + 6)² - 41
rearrange the quadratic into the standard format
- write out the initial bracket divide the middle value by 2
- multiply out the brackets and then compare it to the original, to find what you need to add or subtract to complete the square
- add or subtract the adjusting number to make it match the original
- multiply out the brackets and then compare it to the original, to find what you need to add or subtract to complete the square
- write out the initial bracket divide the middle value by 2
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- GCSE Maths (Algebra) Mind Map on completing the square, created by lizabeth rawson on 28/02/2020.
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- lizabeth rawson
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