Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$\frac{1}{\sqrt{7-2}}$$

Answer

sqrt(5)/5

Solution


Simplify  \(7-2\)  to  \(5\).
\[\frac{1}{\sqrt{5}}\]
Rationalize the denominator: \(\frac{1}{\sqrt{5}} \cdot \frac{\sqrt{5}}{\sqrt{5}}=\frac{\sqrt{5}}{5}\).
\[\frac{\sqrt{5}}{5}\]

Decimal Form: 0.447214

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