## Paper 12 Oct Nov 2019 Pure Math I – 9709/12/O/N/19

Check out my complete solution here: » Full Solutions « Like and subscribe too! =) 1.     The coefficient of $\ x^2 \$ in the expansion of $\ (4 + ax) {(1 + \frac{x}{2})}^{6} \$ is $\ 3$. Find the value of the constant $\ a$. $$\tag*{[4]}$$ …