Question

Найдите решение выражения
$\frac{1}{4 - 3 \sqrt{2} } - \frac{1}{4 + 3 \sqrt{2} }$
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Answer 1

= $\frac{4+3\sqrt{2}-4+3\sqrt{2}}{4^{2} -(3\sqrt{2})^{2}} =\frac{2*3\sqrt{2} }{-2} =-3\sqrt{2}$