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1.1 Proof

1.1 Proof

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Question 41

It is given that f(x)=2x3+5x2−4x−3f(x) = 2x^3 + 5x^2 - 4x - 3f(x)=2x3+5x2−4x−3

a.

Use the factor theorem to show that (x+3)(x + 3)(x+3) is a factor of f(x)f(x)f(x).

[2]
b.

Hence factorise f(x)f(x)f(x) completely.

[3]
Markscheme

1.1 Proof Questions

  1. A Level
  2. /Maths
  3. /1.1 Proof

132 exam-style questions on OCR (MEI) A Level Maths 1.1 Proof, covering 1.1.1 Structure of mathematical proof, 1.1.2 Disproof by counter example, 1.1.3 Proof by contradiction (A-level only), and 1.1 Proof. Each one has a worked solution and a mark scheme showing where the marks go.

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