approaching this numerically is slow...
students will need to be able to form a quadratic general rule after a factor has been extracted for their results
with, probably, more examples
maybe it is too time consuming to build up a numerical approach to factorising the sum and differnece of two cubes, although the linear factor perhaps can be appreciated
maybe move on to a geometric interpretation and then return to generalisations for the forms of these questions later
sum of two cubes
3D tinkerpot,
can vary the view
here
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