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Quadratics

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Question 86

The equation kx2+(5k+2)x+4k=0kx^2 + (5k+2)x + 4k = 0kx2+(5k+2)x+4k=0, where k k\,k is a constant, has no real roots.

Find the set of possible values for kkk.

[4]
Markscheme

Quadratics Questions

  1. A Level
  2. /Maths
  3. /Quadratics

322 exam-style questions on Edexcel A Level Maths Quadratics, covering 2.1 Solving Quadratics, 2.2 Completing the Square, 2.3 Sketching Quadratic Graphs, 2.4 The Discriminant, and 2.5 Modelling with Quadratics. Each one has a worked solution and a mark scheme showing where the marks go.

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