Evaluate 2/( square root of 21)

Problem

2/√(,21)

Solution

1. Identify the expression as a fraction with an irrational denominator.

2. Rationalize the denominator by multiplying both the numerator and the denominator by √(,21)

3. Multiply the numerators: 2⋅√(,21)=2√(,21)

4. Multiply the denominators: √(,21)⋅√(,21)=21

5. Combine the results into a single fraction.

Final Answer

2/√(,21)=(2√(,21))/21

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