Mathematics 9709 · AS & A Level · Quadratics

Quadratics — practice question

In the expansion of $(1 + \frac{2}{p}x)^5 + (1 + px)^6$, the coefficient of $x^2$ is 70.
(main)[6]

Determine the possible values of the constant $p$.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: The coefficient of $x^2$ in $(1+\frac{2}{p}x)^5$ is $\frac{40}{p^2}$.

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