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College Math MCQs – Practice Test 14 (Chapter 9)

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Quadratic Equations MCQ – Practice Test 14 PDF Download

MCQ 66: If ω is the imaginary cube root of unity, then ω³ =:

  1. 1
  2. 0
  3. ω²

MCQ 67: The discriminant of quadratic equation ax² +bx +c = 0 is:

  1. b² + 4ac
  2. 4ac-b²
  3. b² - 4ac
  4. a² - 4bc

MCQ 68: The quadratic formula is:

  1. x = (-b ± √(b² - 4ac))/2a
  2. x = -b ± √( b ² - 4ac /a
  3. x = b ± √( b ² - 4ac /a
  4. None of Above

MCQ 69: If α and β are the roots of x² -2x + 3 = 0, then the equation with roots α+2, β+2 is:

  1. x² - 6x + 11 = 0
  2. x² + 6x - 11 = 0
  3. x² -11x + 6 = 0
  4. x² +11x - 6 = 0

MCQ 70: The roots of the quadratic equation ax² + bx + c = 0 are real and distinct if:

  1. b² - 4ac = 0
  2. b² - 4ac > 0
  3. b² - 4ac < 0
  4. b² - 4ac≥ 0

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