Mathematics 9709 · AS & A Level · Algebra

Algebra — practice question

Define $f(x) = \dfrac{7x^{2} - 15x + 8}{(1 - 2x)(2 - x)^{2}}$.
(i)[5]

Find the partial fractions decomposition of $f(x)$.

(ii)[5]

Hence find the expansion of $f(x)$ in ascending powers of $x$, up to and including the term in $x^{2}$.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: Give or indicate the form $\frac{A}{1-2x}+\frac{B}{2-x}+\frac{C}{(2-x)^2}$.

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