To simplify the expression \(\frac{36\sqrt{39}}{9\sqrt{13}}\), we can start by simplifying the coefficients and radicals separately.
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Simplify the coefficients: \[ \frac{36}{9} = 4 \]
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Simplify the radicals: We need to simplify \(\frac{\sqrt{39}}{\sqrt{13}}\). We can combine the square roots: \[ \frac{\sqrt{39}}{\sqrt{13}} = \sqrt{\frac{39}{13}} \]
Now, divide \(39\) by \(13\): \[ \frac{39}{13} = 3 \] Therefore: \[ \sqrt{\frac{39}{13}} = \sqrt{3} \]
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Combine the results: Now we can combine the simplified coefficient and the simplified radical: \[ 4 \cdot \sqrt{3} = 4\sqrt{3} \]
Putting all of this together, the exact simplified answer is: \[ \frac{36\sqrt{39}}{9\sqrt{13}} = 4\sqrt{3} \]