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2.4 The Discriminant

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Question 19
a.

The equation x2+(n+1)x+(3−3n)=0x^2 + (n + 1)x + (3 - 3n) = 0x2+(n+1)x+(3−3n)=0, where n n\,n is a constant, has two distinct real roots.

Show that the condition for n n\,n is n2+14n−11>0n^2+14n-11>0n2+14n−11>0.

[3]
b.

Hence find the set of possible values for nnn.

[4]
Markscheme

2.4 The Discriminant Questions

  1. A Level
  2. /Maths
  3. /2.4 The Discriminant

49 exam-style questions on Edexcel A Level Maths 2.4 The Discriminant. Each one has a worked solution and a mark scheme showing where the marks go.

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