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

समीकरण \(|\sqrt{ x }-2|+\sqrt{ x }(\sqrt{ x }-4)+2=0,( x >0)\) के हलों का योग बराबर है -

  1. A \(9\)
  2. B \(4\)
  3. C \(10\)
  4. D \(12\)
Verified Solution

Answer & Solution

Correct Answer

(C) \(10\)

Step-by-step Solution

Detailed explanation

\(|\sqrt{x}-2|+\sqrt{x}(\sqrt{x}-4)+2=0\) \(|\sqrt{x}-2|+(\sqrt{x})^{2}-4 \sqrt{x}+2=0\) \(|\sqrt{x}-2|^{2}+|\sqrt{x}-2|-2=0\) \(|\sqrt{x}-2|=-2(\text { not possible })\) or \(|\sqrt{x}-2|=1\) \(\sqrt{x}-2=1,-1\) \(\sqrt{x}=3,1\) \(x=9,1\) Sum \(=10\)
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