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Write $\frac{1}{\sqrt{1-2x}}$ as an expansion in ascending powers of $x$, including terms up to and including $x^3$, and simplify the coefficients.
Mathematics 9709 · AS & A Level · Algebra
Algebra — practice question
Worked solution & mark scheme
This 4-mark question has a full step-by-step worked solution and mark scheme. One marking point: “State a correct unsimplified form of the $x$, $x^2$ or $x^3$ term.” …
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