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Hi, this should be the answer. I think this is considered slightly above average difficulty binomial theorem question.

Basically, you use the basic BT formula, along with the manual calculation of n! to derive out the formula. Then you have to make use of law of indices to combine all the "2" terms together.

The manual calculation of n! is definitely useful to know because it's usually needed to solve the more difficult BT question. Hopefully this explanation helps.

Basically, you use the basic BT formula, along with the manual calculation of n! to derive out the formula. Then you have to make use of law of indices to combine all the "2" terms together.

The manual calculation of n! is definitely useful to know because it's usually needed to solve the more difficult BT question. Hopefully this explanation helps.

Date Posted:
2 years ago