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What is [tex]\sqrt{125}[/tex] in simplest form?

A. [tex]5 \sqrt{5}[/tex]
B. [tex]25 \sqrt{5}[/tex]
C. [tex]5 \sqrt{25}[/tex]
D. 15


Sagot :

To find the simplest form of [tex]\(\sqrt{125}\)[/tex], we need to simplify the square root expression.

Step 1: Factorize the number inside the square root.

[tex]\[ 125 = 5 \times 25 \][/tex]

Step 2: Recall that [tex]\(\sqrt{a \times b} = \sqrt{a} \times \sqrt{b}\)[/tex]. Thus, we can write:

[tex]\[ \sqrt{125} = \sqrt{5 \times 25} \][/tex]

Step 3: Simplify the square root expression by separating it into its factors:

[tex]\[ \sqrt{125} = \sqrt{5} \times \sqrt{25} \][/tex]

Step 4: Evaluate the square root of 25:

[tex]\[ \sqrt{25} = 5 \][/tex]

Step 5: Substitute the evaluated square root back into the expression:

[tex]\[ \sqrt{125} = \sqrt{5} \times 5 = 5 \sqrt{5} \][/tex]

Thus, the simplest form of [tex]\(\sqrt{125}\)[/tex] is [tex]\(5 \sqrt{5}\)[/tex].

Therefore, the correct answer is:
A. [tex]\(5 \sqrt{5}\)[/tex]
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