3 Binomial Theorem - Example 1 - A basic binomial expansion question to get used to the formula.

A typical binomial expansion question in exams with a hence part. Find the first four terms of the expansions (1+3x)^6 and (1-4x)^5. Hence find the coefficient of x^3 in the expansion [(1+3x)^6(1-4x)^5]. If you like what you see, please subscribe to this channel! http://www.youtube.com/subscription_c... For more videos, please visit http://www.numberskill.com/board-cast... Like us on Facebook   / garyang.math   Follow us on Google+ https://plus.google.com/1170740021010...