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Algebra and Functions 1

Algebra and Functions 1

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Question 9

The equation

x2+kx+8=k x^2 + kx + 8 = k x2+kx+8=k

has no real solutions for xxx.

a.

Show that k k\,k satisfies k2+4k−32<0k^2 + 4k - 32 < 0k2+4k−32<0.

[4]
b.

Hence find the set of possible values of kkk.

[4]
Markscheme

Algebra and Functions 1 Questions

  1. A Level
  2. /Old Maths
  3. /Algebra and Functions 1

18 exam-style questions on Edexcel A Level Old Maths Algebra and Functions 1. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank