Can this be factorised? 4p^2-9q^2 Yes I'm sure it's a p and q, not p and p or q and q
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Originally Posted by Mukilab Can this be factorised? 4p^2-9q^2 Yes I'm sure it's a p and q, not p and p or q and q Yes, use the difference of two squares. $\displaystyle 4p^2 - 9q^2 = (2p)^2 - (3q)^2$ $\displaystyle = (2p - 3q)(2p + 3q)$.
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