What method do I use to factorise ?
The answer is
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One way to do it is to first take out the common factor of :
You can then see (or test) values of that will make
In this case: is a factor.
Then if you divide by you'll get the quadratic factor.
Lovemath is using the fact that .
It is useful to know that, for all n,
and, for all odd n, .
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