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The Binomial Expansion

The Binomial Expansion

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Question 6
a.

Find the first four terms, in ascending powers of xxx, in the binomial expansion of (1+kx)6(1 + kx)^6(1+kx)6, where k k\,k is a non-zero constant.

[3]
b.

Given that, in this expansion, the coefficients of x x\,x and x2 x^2\,x2 are equal, find the value of kkk.

[2]
c.

Find the coefficient of x3x^3x3.

[2]
Markscheme

The Binomial Expansion Questions

  1. A Level
  2. /Old Maths
  3. /The Binomial Expansion

10 exam-style questions on Edexcel A Level Old Maths The Binomial Expansion. Each one has a worked solution and a mark scheme showing where the marks go.

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