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Algebraic Methods

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Question 60

f(x)=x3+5x2+x−12f(x) = x^3 + 5x^2 + x - 12f(x)=x3+5x2+x−12

a.

Use the factor theorem to show that x=−4x = -4x=−4 is a solution to f(x)=0f(x) = 0f(x)=0

[2]
b.

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

[5]
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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