$\displaystyle a^2-9b^2$

Don't know what to put as the subject...-1/1?

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- Jan 6th 2010, 11:52 AMMukilabFactorise :/
$\displaystyle a^2-9b^2$

Don't know what to put as the subject...-1/1? - Jan 6th 2010, 11:56 AMpickslides
- Jan 6th 2010, 12:01 PMMukilab