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Binomial Expansion

Binomial Expansion

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Question 97
a.

Expand (1+5x)−3(1+5x)^{-3}(1+5x)−3 in ascending powers of x x\,x up to and including x3x^3x3

[4]
b.

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

[1]
c.

Use your expansion to find the expansion of 4x+1(1+5x)3\displaystyle \frac{4x+1}{(1+5x)^3}(1+5x)34x+1​ up to and including x3x^3x3

[3]
Markscheme

Binomial Expansion Questions

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

408 exam-style questions on Edexcel A Level Maths Binomial Expansion, covering 4.1 Expanding (1 + x)^n, 4.2 Expanding (a + bx)^n, and 4.3 Using Partial Fractions. Each one has a worked solution and a mark scheme showing where the marks go.

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