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3 Unit A2 1: Pure Mathematics (A-level only)

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Question 314
a.

Expand (4+6x)−12\displaystyle (4 + 6x)^{-\frac{1}{2}}(4+6x)−21​ in ascending powers of x x\,x up to and including the term in x3x^3x3.

[4]
b.

Write down the range of values of x x\,x for which the expansion is valid.

[1]
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3 Unit A2 1: Pure Mathematics (A-level only) Questions

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