1990–2010 CE A.Math QuestionsP.1 of 3 S4 M2 Chapter 3: Binomial Theorem [10 Q5] The sum of the coefficients of xand x2in the expansion of nx)41(+is 180, where nis a positive integer. Find the value of nand the coefficient of x3. [09 Q11] In the binomial expansion of 2021+xx, find (a)the coefficient of x16, (b)the constant term. [08 Q2] (a) Expand 312+xx. (b) Find the coefficient of xin the expansion of 3212)53(+--xxxx. [05 Q2] (a) Expand 5)1(y+. (b) Using (a), or otherwise, expand 52)21(xx++in ascending powers of xup to x2. [04 Q2] (a) Expand 6)21(x+in ascending powers of xup to the term x3. (b) Find the constant term in the expansion of 62)21(111xxx++-. [03 Q12] Determine whether the expansion of 9212+xxconsists of (a)a constant term, (b)an x2term. In each part, find the term if it exists.
1990–2010 CE A.Math QuestionsP.2 of 3 [02 Q1] If nis a positive integer and the coefficient of x2