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Determine the coefficient of $x$ in the expansion of $(x^2 - \frac{2}{x})^5$.
Mathematics 9709 · AS & A Level · Series
Determine the coefficient of $x$ in the expansion of $(x^2 - \frac{2}{x})^5$.
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “The $x$ term is correctly identified as $10(x^2)^2\left(-\frac{2}{x}\right)$” …