Question
The square root of \( (7+3\sqrt{5)}(7-3\sqrt{5)} is \)
Answer: Option B
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\( \sqrt{(7+3\sqrt{5)}(7-3\sqrt{5)}}=\sqrt{(7)^{2}-(3\sqrt{5})^{2}} = \sqrt{49-45} = \sqrt{4} = 2\)
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