4.2 Expanding (a + bx)^n
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a.

Expand (32+80x)15\displaystyle (32 + 80x)^{\frac{1}{5}}(32+80x)51​ in ascending powers of x x\,x up to and including the term in x3x^3x3.

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b.

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

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4.2 Expanding (a + bx)^n Questions

Practise Edexcel A Level Maths 4.2 Expanding (a + bx)^n with exam-style questions for A Level Maths. 99 questions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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4.2 Expanding (a + bx)^n Questions

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