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Black Advanced Problems in Mathematics
Exam
Black Advanced Problems in Mathematics
Subject
Mathematics
Chapter
Quadratic Equation

Black Advanced Problems in Mathematics · Mathematics · Quadratic Equation

Root(s) of the equation 9x^2 - 18|x| + 5 = 0 belonging to the...

Root(s) of the equation 9x2−18∣x∣+5=09x^2 - 18|x| + 5 = 0 belonging to the domain of definition of the function f(x)=log⁡(x2−x−2)f(x) = \log(x^2-x-2) is/are:

Options

  1. A−53,−13\frac{-5}{3}, \frac{-1}{3}
  2. B53,13\frac{5}{3}, \frac{1}{3}
  3. C−53\frac{-5}{3}
  4. D−13\frac{-1}{3}.

Correct answer

C. −53\frac{-5}{3}

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