Apply Quotient Rule: Apply the quotient rule of radicals to 421.421=421
Evaluate 21: Evaluate 21. Find the prime factorization of 21 to see if there are any pairs of identical factors. 21=3×7 Since there are no pairs of identical factors, we cannot simplify 21 further.
Find Prime Factorization: Now, let's evaluate 4.4=2×2= 2
Evaluate 4: Combine the results from the previous steps.\sqrt{\frac{21}{4}} = \frac{\sqrt{21}}{\sqrt{4}}\(\newline= \frac{\sqrt{21}}{2}\)Since 21 cannot be simplified further, this is the final simplified form.
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