Question

$$\sqrt{(\frac{525}{100})^{2}}$$

Answer

21/4

Solution


Simplify  \(\frac{525}{100}\)  to  \(\frac{21}{4}\).
\[\sqrt{{(\frac{21}{4})}^{2}}\]
Use Division Distributive Property: \({(\frac{x}{y})}^{a}=\frac{{x}^{a}}{{y}^{a}}\).
\[\sqrt{\frac{{21}^{2}}{{4}^{2}}}\]
Simplify  \({21}^{2}\)  to  \(441\).
\[\sqrt{\frac{441}{{4}^{2}}}\]
Simplify  \({4}^{2}\)  to  \(16\).
\[\sqrt{\frac{441}{16}}\]
Simplify.
\[\frac{\sqrt{441}}{\sqrt{16}}\]
Since \(21\times 21=441\), the square root of \(441\) is \(21\).
\[\frac{21}{\sqrt{16}}\]
Since \(4\times 4=16\), the square root of \(16\) is \(4\).
\[\frac{21}{4}\]

Decimal Form: 5.25