$$(\frac{3ab}{2ab})^{4}$$
$\frac{81}{16}=5.0625$
$$\left(\frac{3}{2}\right)^{4}$$
$$\frac{81}{16}$$
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$\frac{3 ^ {4}}{2 ^ {4}} = 5\frac{1}{16} = 5.0625$
