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1.4.1 Sequences and Series - The Binomial Theorem

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Question 68

Find the first three terms, in ascending powers of $x$ , in the expansion of $3 + kx)^4$ where $k\,$ is a positive constant.

[3]

Hence, given that the coefficient of $x\,$ is four times the coefficient of $x^2$ , find the value of $k$ .

[2]

Markscheme

1.4.1 Sequences and Series - The Binomial Theorem Questions

A Level
Maths
1.4.1 Sequences and Series - The Binomial Theorem

108 exam-style questions on WJEC A Level Maths 1.4.1 Sequences and Series - The Binomial Theorem. Each one has a worked solution and a mark scheme showing where the marks go.

1.4.1 Sequences and Series - The Binomial Theorem

Question bank

1.4.1 Sequences and Series - The Binomial Theorem

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Question 68

Find the first three terms, in ascending powers of $x$ , in the expansion of $3 + kx)^4$ where $k\,$ is a positive constant.

[3]

Hence, given that the coefficient of $x\,$ is four times the coefficient of $x^2$ , find the value of $k$ .

[2]

Markscheme

1.4.1 Sequences and Series - The Binomial Theorem Questions

A Level
Maths
1.4.1 Sequences and Series - The Binomial Theorem

108 exam-style questions on WJEC A Level Maths 1.4.1 Sequences and Series - The Binomial Theorem. Each one has a worked solution and a mark scheme showing where the marks go.