What is the square root of 23-4\sqrt{15}?
- A. \sqrt{6}-3\sqrt{2} ✓
- B. 7-3\sqrt{5}
- C. \sqrt{3}-2\sqrt{5}
- D. \sqrt{5}-4\sqrt{3}
Correct Answer: A. \sqrt{6}-3\sqrt{2}
Explanation
The expression simplifies to \sqrt{(\sqrt{20}-\sqrt{3})^2} = 2\sqrt{5}-\sqrt{3}, which does not properly match any of the given options. Note: This question was dropped by UPSC.
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