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Algebraic Methods

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Question 41

f(x)=2x3+2x2−9x−10f(x) = 2x^3 + 2x^2 - 9x - 10f(x)=2x3+2x2−9x−10

a.

Use the factor theorem to show that (x+2)(x + 2)(x+2) is a factor of f(x)f(x)f(x)

[2]
b.

Hence, or otherwise, solve the equation 2x3+2x2−9x−10=02x^3 + 2x^2 - 9x - 10 = 02x3+2x2−9x−10=0 giving your answers to 2 decimal places where appropriate

[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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