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Algebraic Methods

Algebraic Methods

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Question 173

Use proof by contradiction to prove that 5\sqrt{5}5​ is irrational.

(You may assume that if nnn is an integer and n2n^2n2 is a multiple of 5, then nnn is a multiple of 5).

[6]
Markscheme

Algebraic Methods Questions

  1. A Level
  2. /Maths
  3. /Algebraic Methods

368 exam-style questions on Edexcel A Level Maths Algebraic Methods, covering 1.1 Proof by Contradiction, 1.2 Algebraic Fractions, 1.3 Partial Fractions, 1.4 Repeated Factors, and 1.5 Algebraic Division. Each one has a worked solution and a mark scheme showing where the marks go.

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