Answer
$\frac{3\sqrt 7+3\sqrt 3}{4}$
Work Step by Step
$\frac{3}{\sqrt 7-\sqrt 3}$
Multiply the equation with $\frac{\sqrt 7+\sqrt 3}{\sqrt 7+\sqrt 3}$
$=\frac{3(\sqrt 7+\sqrt 3)}{7-3}$
$=\frac{3\sqrt 7+3\sqrt 3}{4}$
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