Mathematics 9709 · AS & A Level · Algebra

Algebra — practice question

We write $p(x)$ for the polynomial $x^4 + ax^3 - x^2 + bx + 2$, with $a$ and $b$ fixed constants.
(a)[5]

As $(x - 1)$ and $(x + 2)$ are factors of $p(x)$, determine the values of $a$ and $b$.

(b)[3]

With these values of $a$ and $b$, determine the quotient obtained when $p(x)$ is divided by $x^2 + x - 2$.

Worked solution & mark scheme

This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: Put in $x = 1$ or $x = -2$ and set the expression equal to zero

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