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3.4.1 Sequences and Series (A-level only)

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Question 41

Find the first four terms, in ascending powers of $x$ , of the binomial expansion of

(1−14x)8\left(1 - \frac{1}{4}x\right)^8

giving each term in simplest form.

[4]

Hence find the coefficient of $x^3$ in the expansion of

5)\left(1 - \frac{1}{4}x\right)^8

giving the answer in simplest form.

[2]

Markscheme

3.4.1 Sequences and Series (A-level only) Questions

A Level
Maths
3.4.1 Sequences and Series (A-level only)

43 exam-style questions on WJEC A Level Maths 3.4.1 Sequences and Series (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

3.4.1 Sequences and Series (A-level only)

Question bank

3.4.1 Sequences and Series (A-level only)

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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

Question 41

Find the first four terms, in ascending powers of $x$ , of the binomial expansion of

(1−14x)8\left(1 - \frac{1}{4}x\right)^8

giving each term in simplest form.

[4]

Hence find the coefficient of $x^3$ in the expansion of

5)\left(1 - \frac{1}{4}x\right)^8

giving the answer in simplest form.

[2]

Markscheme

3.4.1 Sequences and Series (A-level only) Questions

A Level
Maths
3.4.1 Sequences and Series (A-level only)

43 exam-style questions on WJEC A Level Maths 3.4.1 Sequences and Series (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.