Mathematics 9709 · AS & A Level · Quadratics

Quadratics — practice question

In the expansion of $(p + \frac{1}{p}x)^4$, the coefficient of $x^3$ is 144.
(main)[4]

Determine the possible values of the constant $p$.

Worked solution & mark scheme

This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: Show $4C1 \times p \times \frac{1}{p^3} x^3$ (or an equivalent expression seen in the expansion)

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