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JEE Mains · Maths · STD 11 - 4.2 Quadratic equations and inequations

સમીકરણ \(x^{2}-|x|-12=0\) ના વાસ્તવિક બીજની સંખ્યા મેળવો.

  1. A \(3\)
  2. B \(1\)
  3. C \(2\)
  4. D \(4\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(2\)

Step-by-step Solution

Detailed explanation

\(|x|^{2}-|x|-12=0\) \((|x|+3)(|x|-4)=0\) \(|x|=4 \Rightarrow x=\pm 2 \quad(\because|x| \neq-3)\)
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