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Select the correct answer.

Which of the following is equal to this expression?

[tex]\[ (27 \cdot 250)^{\frac{1}{3}} \][/tex]

A. [tex]\( 15 \cdot \sqrt[3]{2} \)[/tex]

B. [tex]\( 5 \cdot \sqrt[3]{2} \)[/tex]

C. [tex]\( \sqrt[3]{10} \)[/tex]

D. [tex]\( \sqrt[3]{30} \)[/tex]


Sagot :

To solve the problem of determining which of the given choices is equal to the expression [tex]\((27 \cdot 250)^{\frac{1}{3}}\)[/tex], we analyze it step by step:

1. Evaluate the Original Expression:
First, we need to simplify the expression [tex]\((27 \cdot 250)^{\frac{1}{3}}\)[/tex].

2. Break Down the Expression:
[tex]\[ 27 \cdot 250 \][/tex]
Instead of calculating the product [tex]\(27 \cdot 250\)[/tex] directly, let's recognize that:
[tex]\[ 27 = 3^3 \quad \text{and} \quad 250 = 2 \cdot 125 = 2 \cdot 5^3 \][/tex]
Therefore,
[tex]\[ 27 \cdot 250 = 3^3 \cdot 2 \cdot 5^3 \][/tex]

3. Combine and Simplify Under the Cube Root:
Given the product inside the cube root, we have:
[tex]\[ (3^3 \cdot 2 \cdot 5^3)^{\frac{1}{3}} \][/tex]
Using the properties of exponents, we can split the terms within the cube root:
[tex]\[ (3^3)^{\frac{1}{3}} \cdot (2)^{\frac{1}{3}} \cdot (5^3)^{\frac{1}{3}} \][/tex]

4. Simplify Each Term:
Since [tex]\((a^b)^{\frac{1}{b}} = a\)[/tex], we know:
[tex]\[ (3^3)^{\frac{1}{3}} = 3 \][/tex]
Similarly,
[tex]\[ (5^3)^{\frac{1}{3}} = 5 \][/tex]
So we are left with:
[tex]\[ 3 \cdot 5 \cdot (2)^{\frac{1}{3}} \][/tex]
Simplify this further:
[tex]\[ 3 \cdot 5 = 15 \][/tex]
Thus, the expression is:
[tex]\[ 15 \cdot (2)^{\frac{1}{3}} \][/tex]

5. Compare with Given Choices:
[tex]\[ \boxed{15 \cdot \sqrt[3]{2}} \][/tex]
We see that this matches one of the given choices.

Therefore, the correct answer is:
[tex]\[ 15 \cdot \sqrt[3]{2} \][/tex]

Thus, the answer is [tex]\(\boxed{1}\)[/tex].