Mathematics 9709 · AS & A Level · Series

Series — practice question

(i)[3]

Find the coefficients of $x^2$ and $x^3$ within the expansion of $(2 - x)^6$.

(ii)[2]

Find the coefficient of $x^3$ within the expansion of $(3x + 1)(2 - x)^6$.

Worked solution & mark scheme

This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Accurate expansion of $(2-x)^6$” …

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