(a) Find the first 3 terms, in ascending powers of \(x\), of the binomial expansion of
$$\left( 2 + \frac { 3 x } { 4 } \right) ^ { 6 }$$
giving each term in its simplest form.
(b) Explain how you could use your expansion to estimate the value of \(1.925 ^ { 6 }\) You do not need to perform the calculation.