??? - 2015 JUNE Q4
4.
i) Find and simplify the first three terms in the binomial expression of (2 + ax)6 in ascending powers of x [4]
ii) In the expansion of (3-5x)(2 + ax)6, the coefficient of x is 64. Find the value of a. [4]
i) Find and simplify the first three terms in the binomial expression of (2 + ax)6 in ascending powers of x [4]
ii) In the expansion of (3-5x)(2 + ax)6, the coefficient of x is 64. Find the value of a. [4]