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4.2 Expanding (a + bx)^n

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Question 26

Expand $1+2x3\sqrt[3]{1+2x}$ in ascending powers of $x\,$ up to and including $x^3\,$ and state the set of values of $x\,$ for which the expansion is valid.

[5]

Use your expansion to find an approximation for $1.13\sqrt[3]{1.1}$ to 5 decimal places.

[2]

Markscheme

4.2 Expanding (a + bx)^n Questions

A Level
Maths
4.2 Expanding (a + bx)^n

99 exam-style questions on Edexcel A Level Maths 4.2 Expanding (a + bx)^n. Each one has a worked solution and a mark scheme showing where the marks go.

4.2 Expanding (a + bx)^n

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4.2 Expanding (a + bx)^n

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Question 26

Expand $1+2x3\sqrt[3]{1+2x}$ in ascending powers of $x\,$ up to and including $x^3\,$ and state the set of values of $x\,$ for which the expansion is valid.

[5]

Use your expansion to find an approximation for $1.13\sqrt[3]{1.1}$ to 5 decimal places.

[2]

Markscheme

4.2 Expanding (a + bx)^n Questions

A Level
Maths
4.2 Expanding (a + bx)^n

99 exam-style questions on Edexcel A Level Maths 4.2 Expanding (a + bx)^n. Each one has a worked solution and a mark scheme showing where the marks go.