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1.5.6 Polynomials and rational expressions

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Question 47

It is given that f(x)=x3+6x2+4x−15f(x) = x^3 + 6x^2 + 4x - 15f(x)=x3+6x2+4x−15

a.

Use the factor theorem to show that x=−3x = -3x=−3 is a solution of the equation f(x)=0f(x) = 0f(x)=0.

[2]
b.

Find the other solutions of f(x)=0f(x) = 0f(x)=0, giving your answers to 2 decimal places.

[4]
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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