(a)[4]
Expand $\sqrt[3]{1 + 6x}$ as a series in ascending powers of $x$, including terms up to and including $x^3$, and simplify the coefficients.
(b)[1]
State the range of values of $x$ for which the expansion is valid.
Mathematics 9709 · AS & A Level · Algebra
Algebra — practice question
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “State a correct, unsimplified form of the $x$ or $x^2$ or $x^3$ term” …
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