Mathematics 9709 · AS & A Level · Algebra

Algebra — practice question

Let $p(x)$ represent the polynomial $2x^3 - 4x^2 + ax + b$, with $a$ and $b$ as constants. It is stated that the remainder is $4$ when $p(x)$ is divided by $(x + 1)$, and that the remainder is $12$ when $p(x)$ is divided by $(x - 3)$.
(i)[5]

Find $a$ and $b$.

(ii)[3]

Given these values of $a$ and $b$, find the quotient and remainder when $p(x)$ is divided by $(x^2 - 2)$.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: Substitute $x=-1$, set the result to zero, and obtain a correct equation in any form

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