Easy -1.2 This is a direct application of the binomial theorem requiring only substitution into the formula for a single term. It's more routine than average A-level questions since it's purely mechanical recall with no problem-solving, though the arithmetic with negative terms requires care.
1 Find the coefficient of $x ^ { 7 }$ in the expansion of $( 2 x - 3 ) ^ { 7 }$\\
Circle your answer.\\
-2187-128 2128
\hfill \mbox{\textit{AQA Paper 1 2023 Q1 [1]}}