10 Binomial Theorem - Example 5 - Challenging question with power unknown.

Given that the coefficient of x^3 is 3 times that of x^2 in the expansion (2+3x)^n, find the value of n. Difficult question involving the use of nCr formula. If you like what you see, please subscribe to this channel! http://www.youtube.com/subscription_center?add_user=numberskill For more videos, please visit http://www.numberskill.com/board-casts-on-youtube/#Bookmark Like us on Facebook http://www.facebook.com/garyang.math Follow us on Google+ https://plus.google.com/117074002101017934426/posts