Question

$$\sqrt{ 216 } -5 \sqrt{ 6 } + \sqrt{ 294 } - \frac{ 3 }{ \sqrt{ 6 } }$$

Answer

(45*sqrt(6))/6

Solution


Simplify  \(\sqrt{216}\)  to  \(6\sqrt{6}\).
\[6\sqrt{6}-5\sqrt{6}+\sqrt{294}-\frac{3}{\sqrt{6}}\]
Simplify  \(\sqrt{294}\)  to  \(7\sqrt{6}\).
\[6\sqrt{6}-5\sqrt{6}+7\sqrt{6}-\frac{3}{\sqrt{6}}\]
Rationalize the denominator: \(\frac{3}{\sqrt{6}} \cdot \frac{\sqrt{6}}{\sqrt{6}}=\frac{3\sqrt{6}}{6}\).
\[6\sqrt{6}-5\sqrt{6}+7\sqrt{6}-\frac{3\sqrt{6}}{6}\]
Simplify.
\[\frac{45\sqrt{6}}{6}\]

Decimal Form: 18.371173