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Algebra and Functions 1

Algebra and Functions 1

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Question 7

The equation kx2+4x+(5−k)=0kx^2 + 4x + (5 - k) = 0kx2+4x+(5−k)=0, where k k\,k is a constant, has 2 different real solutions for xxx.

a.

Show that k k\,k satisfies

k2−5k+4>0. k^2 - 5k + 4 > 0. k2−5k+4>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