To simplify the expression \( 161449\sqrt{} \), we need to understand what is being asked. If we assume that \( \sqrt{161449} \) is the expression we want to analyze, we can find its value.
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First, let's calculate the square root of 161449:
\[ \sqrt{161449} = 401 \]
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Now we need to see which of the given options is equivalent to \( 401 \) or represents the same quantity in some way.
The available options are:
- 12
- \( \frac{1}{2} \)
- 27
- \( \frac{2}{7} \)
- \( \frac{4}{7} \)
- 2
None of the provided responses (12, \( \frac{1}{2} \), 27, \( \frac{2}{7} \), \( \frac{4}{7} \), 2) are equivalent to 401.
If the question intended to ask about the simplified exponent form, since \( 161449 = 401^2 \), we can express it in exponents as:
\[ \sqrt{161449} = \sqrt{401^2} = 401 \]
In conclusion, none of the options provided match the equivalent of \( 161449\sqrt{} \) or \( \sqrt{161449} \), which equals 401.
If you need the problem to be rephrased or a different equation to analyze, please provide me with that context or information!