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Which expressions are equivalent to the given expression?

[tex]\[
\sqrt{80}
\][/tex]

A. [tex]\(160^{\frac{1}{2}}\)[/tex]

B. [tex]\(8 \sqrt{5}\)[/tex]

C. [tex]\(4 \sqrt{10}\)[/tex]

D. [tex]\(80^{\frac{1}{2}}\)[/tex]

E. [tex]\(4 \sqrt{5}\)[/tex]


Sagot :

To determine which expressions are equivalent to the given expression [tex]\(\sqrt{80}\)[/tex], let's analyze each expression step-by-step.

### Given expression:
[tex]\[ \sqrt{80} \][/tex]

### Expressions to Compare:
1. [tex]\(160^{\frac{1}{2}}\)[/tex]
2. [tex]\(8 \sqrt{5}\)[/tex]
3. [tex]\(4 \sqrt{10}\)[/tex]
4. [tex]\(80^{\frac{1}{2}}\)[/tex]
5. [tex]\(4 \sqrt{5}\)[/tex]

### Step-by-Step Solution:

1. Expression [tex]\(160^{\frac{1}{2}}\)[/tex]:
- Taking the square root of 160:
[tex]\[ 160^{\frac{1}{2}} = \sqrt{160} \][/tex]
- [tex]\(\sqrt{160}\)[/tex] is not equivalent to [tex]\(\sqrt{80}\)[/tex].

2. Expression [tex]\(8 \sqrt{5}\)[/tex]:
- Rearranging the expression:
[tex]\[ 8 \sqrt{5} \][/tex]
- This expression is different from [tex]\(\sqrt{80}\)[/tex].

3. Expression [tex]\(4 \sqrt{10}\)[/tex]:
- Rearranging the expression:
[tex]\[ 4 \sqrt{10} \][/tex]
- This expression is different from [tex]\(\sqrt{80}\)[/tex].

4. Expression [tex]\(80^{\frac{1}{2}}\)[/tex]:
- Taking the exponent:
[tex]\[ 80^{\frac{1}{2}} = \sqrt{80} \][/tex]
- This expression is equivalent to [tex]\(\sqrt{80}\)[/tex].

5. Expression [tex]\(4 \sqrt{5}\)[/tex]:
- Rearranging the expression:
[tex]\[ 4 \sqrt{5} \][/tex]
- This expression is different from [tex]\(\sqrt{80}\)[/tex].

### Conclusion:
The expressions that are equivalent to [tex]\(\sqrt{80}\)[/tex] are:
[tex]\[ 80^{\frac{1}{2}} \quad \text{and} \quad 4 \sqrt{5} \][/tex]