Mathematics 9709/12 — October/November 2012

Cambridge AS Level · Pure Mathematics 1 · worked solutions for every part, with the mark scheme

questions

marks

105

minutes

Topics Quadratics · Coordinate Geometry · Differentiation · Trigonometry · Series · Integration · +2 more

Q13MSeriesFree sample

In the expansion of $\left(x^2 - \frac{a}{x}\right)^7$ , the coefficient of $x^5$ is $-280$ . Find the value of the constant $a$ .

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