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What is the value of the expression below?

[tex]\[ \left(625^2\right)^{1/8} \][/tex]

A. 5

B. 1

C. 125

D. 25


Sagot :

To solve the expression [tex]\(\left(625^2\right)^{1 / 8}\)[/tex], follow these steps:

1. Simplify the exponent:
[tex]\[ \left(625^2\right)^{1 / 8} \][/tex]
is equivalent to
[tex]\[ \left(625^{2}\right)^{\frac{1}{8}} = 625^{2 \cdot \frac{1}{8}} = 625^{\frac{2}{8}} = 625^{\frac{1}{4}} \][/tex]

2. Interpret the exponent [tex]\(\frac{1}{4}\)[/tex]:
The expression [tex]\(625^{\frac{1}{4}}\)[/tex] represents the fourth root of 625.

3. Evaluate [tex]\(\sqrt[4]{625}\)[/tex]:
We need to find a number [tex]\(x\)[/tex] such that [tex]\(x^4 = 625\)[/tex]. By knowing common powers, we recognize that:
[tex]\[ 5^4 = 5 \times 5 \times 5 \times 5 = 25 \times 25 = 625 \][/tex]
Therefore:
[tex]\[ \sqrt[4]{625} = 5 \][/tex]

So, the value of [tex]\(\left(625^2\right)^{1 / 8}\)[/tex] is [tex]\(\boxed{5}\)[/tex].