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Algebra and Functions 1

Algebra and Functions 1

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Question 10

The equation x2+kx+(k+3)=0x^2 + kx + (k + 3) = 0x2+kx+(k+3)=0, where k k\,k is a constant, has different real roots.

a.

Show that k2−4k−12>0k^2 - 4k - 12 > 0k2−4k−12>0.

[3]
b.

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.

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