Show that the first three terms, in descending powers of \(x\), of the expansion of
$$( 2 x - 3 ) ^ { 10 }$$
are given by
$$1024 x ^ { 10 } + p x ^ { 9 } + q x ^ { 8 }$$
where \(p\) and \(q\) are integers to be found.
4
Find the constant term in the expansion of
$$\left( 2 x - \frac { 3 } { x } \right) ^ { 10 }$$