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TIMO 2018 - Senior Secondary (Grades 10-12) - Preliminary Round - Paper 4 Question 9

TIMO · TIMO 2018 - Senior Secondary (Grades 10-12) - Preliminary Round - Paper 4

Question 9

Find the smallest integer $a$ such that $(a+2)x^2+ax-7=0$ has no real root.
  1. -25
  2. -2
  3. -26
  4. -3