A) \[\sqrt{7}-\sqrt{3}\]
B) \[\sqrt{6}-\sqrt{3}\]
C) \[\sqrt{7}-\sqrt{5}\]
D) \[\sqrt{7}-\sqrt{2}\]
Correct Answer: D
Solution :
\[\sqrt{9-2\sqrt{14}}=\sqrt{7+2-2\times \sqrt{7}\times \sqrt{2}}\] \[=\sqrt{{{(\sqrt{7}-\sqrt{2})}^{2}}}\] \[=\sqrt{7}-\sqrt{2}\]
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