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Quadratics

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Question 14
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a.

By completing the square, find in terms of the constant k k\,k the roots of the equation

x2+kx−6=0 x^2 + kx - 6 = 0 x2+kx−6=0
[4]
b.

Hence find the exact roots of the equation x2+4x−6=0x^2 + 4x - 6 = 0x2+4x−6=0

[2]

Quadratics Questions

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

Practise Edexcel A Level Maths Quadratics with exam-style questions for A Level Maths. 25 questions 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, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

Question bank