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4.2 Expanding (a + bx)^n

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Question 22

Expand $1+4x)^{-2}$ in ascending powers of $x\,$ up to and including $x^3$

[4]

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

[1]

Use your expansion to find the expansion of $3x−1(1+4x)2\displaystyle \frac{3x-1}{(1+4x)^2}$ up to and including $x^3$

[3]

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

Question bank

4.2 Expanding (a + bx)^n

Easy Medium

Question 22

Expand $1+4x)^{-2}$ in ascending powers of $x\,$ up to and including $x^3$

[4]

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

[1]

Use your expansion to find the expansion of $3x−1(1+4x)2\displaystyle \frac{3x-1}{(1+4x)^2}$ up to and including $x^3$

[3]

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.