Pergunta

Simplify the following radicals. 1. (30)/(sqrt (20))=square =square 2 -(10)/(sqrt (5))ast square =square =square 3. -(5)/(sqrt (5))times square =square =square 4. (10)/(sqrt (4))=square =square
Solução

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ArianeProfissional · Tutor por 6 anos
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1. $\frac {30}{\sqrt {20}}=\frac {30}{2\sqrt {5}}=\frac {15}{\sqrt {5}}=\frac {15\sqrt {5}}{5}=3\sqrt {5}$<br />2. $-\frac {10}{\sqrt {5}}\ast \frac {\sqrt {5}}{2}=-\frac {10\sqrt {5}}{2\sqrt {5}}=-\frac {10}{2}=-5$<br />3. $-\frac {5}{\sqrt {5}}\times \frac {\sqrt {5}}{2}=-\frac {5\sqrt {5}}{2\sqrt {5}}=-\frac {5}{2}$<br />4. $\frac {10}{\sqrt {4}}=\frac {10}{2}=5$
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