Ive done this (I think) and got:Quote:

Find the coefficiant of in the expansion of

I cannot find a coeficciant of because, after expanding the 2 brackets. Upon multiplying them both together, the 2 's that are in each bracket make an therefore eradicating a coefficiant of

Any help would be greatly appreciated as if this comes up in the exam, I would be prety stuck

thanks!