Use the Binomial Theorem to expand and simplify the expression.

You need first to factorize , such that:

You need to use the binomial formula, such that:

You need to replace x for x, 3for y and 2 for n, such that:

By definition, nC0 = nCn = 1, hence

By definition , hence

You need first to factorize , such that:

You need to use the binomial formula, such that:

You need to replace x for x, 3for y and 2 for n, such that:

By definition, nC0 = nCn = 1, hence

By definition , hence

Replacing the binomial expansion for  yields:

Grouping the like terms yields:

Hence, expanding and simplifying the expression yields

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