Mathematics 9709/12 — October/November 2023

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

questions

marks

110

minutes

Topics Trigonometry · Quadratics · Differentiation · Series · Integration · Functions · +2 more

Q14MSeriesFree sample

The coefficient of $x^3$ in the expansion of $(3 + 2ax)^5$ is six times the coefficient of $x^2$ in the expansion of $(2 + ax)^6$ .

Find the value of the constant $a$ .

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