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\frac{0}{\sqrt{1}\sqrt{3}\sqrt{1}}
Factor 3=1\times 3. Rewrite the square root of the product \sqrt{1\times 3} as the product of square roots \sqrt{1}\sqrt{3}.
\frac{0}{1\sqrt{3}}
Multiply \sqrt{1} and \sqrt{1} to get 1.
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Zero divided by any non-zero term gives zero.
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