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Geometry

Ray C. Jurgensen, Richard G. Brown, John W. Jurgensen

$Math Studyset 91影视 Explanations$ Math

Student Edition 路 227 pages

ISBN: 9780395977279

Chapter 8: Q9. (page 291)

Simplify each expression.
${(\frac{3}{\sqrt{5}})}^{2}$

Short Answer

Expert verified

The simplified form is,

${(\frac{3}{\sqrt{5}})}^{2} = \frac{9}{5}$ .

Step by step solution

01

Step 1. Given information.

The given expression is,

${(\frac{3}{\sqrt{5}})}^{2}$ .

02

Step 2. It can be further written as below.

We have the given expression is ${(\frac{3}{\sqrt{5}})}^{2}$

Then,

$\begin{matrix} {(\frac{3}{\sqrt{5}})}^{2} = (\frac{3}{\sqrt{5}}) (\frac{3}{\sqrt{5}}) \\ = (\frac{3^{2}}{\sqrt{5} \sqrt{5}}) \\ = (\frac{9}{\sqrt{5^{2}}}) \\ = (\frac{9}{5}) \end{matrix}$

03

Step 3. Neglect negative sign.

Since, square root is positive quantity

So, we neglect negative sign.

Therefore, the simplified form is, ${(\frac{3}{\sqrt{5}})}^{2} = \frac{9}{5}$ .

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