Один пример по алгебре 7 класс.[tex] \frac{5}{ \sqrt{13} + \sqrt{3} } [/tex]. Created by Rahmann. algebra-ru

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June 2022 1 79 Report

Один пример по алгебре 7 класс.
[tex] \frac{5}{ \sqrt{13} + \sqrt{3} } [/tex]

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maymr

$\tt\displaystyle \frac{5}{\sqrt{13}+\sqrt{3}}=\frac{5*(\sqrt{13}-\sqrt{3})}{(\sqrt{13}+\sqrt{3})(\sqrt{13}-\sqrt{3})}=\\\\\\=\frac{5*(\sqrt{13}-\sqrt{3})}{13-3}=\frac{5*(\sqrt{13}-\sqrt{3})}{10}=\\\\\\=\frac{\sqrt{13}-\sqrt{3}}{2}$

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