Question 5
**(b)** (In part (a) you found that the first three terms in the expansion of $\left(2 - \frac{3}{2}x\right)^5$ are $32 - 120x + 180x^2$.)
Use your answer to part (a), with a suitable value of $x$, to find an approximation to $1.985^5$.
Use your answer to part (a), with a suitable value of $x$, to find an approximation to $1.985^5$.
