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1.5.6 Polynomials and rational expressions

1.5.6 Polynomials and rational expressions

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Question 20

It is given that f(x)=x3+3x2−13x−15f(x) = x^3 + 3x^2 - 13x - 15f(x)=x3+3x2−13x−15

a.

Use the factor theorem to show that (x+5)(x + 5)(x+5) is a factor of f(x)f(x)f(x).

[2]
b.

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

[3]
Markscheme

1.5.6 Polynomials and rational expressions Questions

  1. A Level
  2. /Maths
  3. /1.5.6 Polynomials and rational expressions

113 exam-style questions on AQA A Level Maths 1.5.6 Polynomials and rational expressions. Each one has a worked solution and a mark scheme showing where the marks go.

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