OCR C1 Specimen — Question 3

Exam BoardOCR
ModuleC1 (Core Mathematics 1)
SessionSpecimen
TopicQuadratic Functions
3 The quadratic equation \(x ^ { 2 } + k x + k = 0\) has no real roots for \(x\).
  1. Write down the discriminant of \(x ^ { 2 } + k x + k\) in terms of \(k\).
  2. Hence find the set of values that \(k\) can take.
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