Copyright © University of Cambridge. All rights reserved.

'Finding Factors' printed from http://nrich.maths.org/

Show menu


Patrick from Woodbridge School described the strategy he used to find the headings:

The method I used was to reveal all of one diagonal and half of the remaining diagonal. This is the minimal way of revealing two expressions which share each factor, and it just fits into the Level 3 rules. Factoring each expression then reveals a few factors for each, and we can build up possibilities by checking for shared factors down one column or row.