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TIMO 2019 - Senior Secondary (Grades 10-12) - Preliminary Round - Paper 3 Question 9

TIMO · TIMO 2019 - Senior Secondary (Grades 10-12) - Preliminary Round - Paper 3

Question 9

Find the smallest integer $k$ for which $(k^2-5)x^2+kx-2=0$ has no real root.
  1. -3
  2. -2
  3. 0
  4. 2