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Binomial Expansion

Binomial Expansion

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Question 237

The binomial expansion of

116+x \frac{1}{\sqrt{16+x}} 16+x​1​

is to be used for the three values x=−4x=-4x=−4, x=8x=8x=8 and x=20x=20x=20.

Without evaluating your expansion, state, giving a reason, which of the three values of x x\,x should not be used.

[1]
Markscheme

Binomial Expansion Questions

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

409 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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