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Algebraic Methods

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Question 20
a.

Prove that n2+n+17n^2 + n + 17n2+n+17 is prime for all integers n n\,n such that 1≤n≤51 \le n \le 51≤n≤5.

[3]
b.

Prove that n2+n+17n^2 + n + 17n2+n+17 is not prime for all values of nnn

[2]
Markscheme

Algebraic Methods Questions

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

257 exam-style questions on Edexcel A Level Maths Algebraic Methods, covering 7.1 Algebraic Fractions, 7.2 Dividing Polynomials, 7.3 The Factor Theorem, 7.4 Mathematical Proof, and 7.5 Methods of Proof. Each one has a worked solution and a mark scheme showing where the marks go.

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