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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

Solution of the quadratic equation (3|x| - 3)^2 = |x| + 7 , which...

Solution of the quadratic equation (3∣x∣−3)2=∣x∣+7(3|x| - 3)^2 = |x| + 7, which belongs to the domain of the function y=(x−4)xy = \sqrt{(x - 4)x} is :

Options

  1. A±19,±2\pm \frac{1}{9}, \pm 2
  2. B19,8\frac{1}{9}, 8
  3. C−2,−19-2, -\frac{1}{9}
  4. D−19,8-\frac{1}{9}, 8.

Correct answer

C. −2,−19-2, -\frac{1}{9}

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