Which Is Equivalent To $216^{\frac{1}{3}}$?A. 3 B. 6 C. 36 D. 72

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Introduction to Exponents

Exponents are a fundamental concept in mathematics that help us simplify complex expressions and solve equations. In this article, we will explore the concept of exponents and how to find equivalent values. Specifically, we will examine the expression $216^{\frac{1}{3}}$ and determine which of the given options is equivalent to it.

What are Exponents?

Exponents are a shorthand way of writing repeated multiplication. For example, $2^3$ means $2 \times 2 \times 2$, which equals 8. Exponents are often represented as a small number raised to a power, such as $2^3$. The base of the exponent is the number being multiplied, and the exponent is the number of times the base is multiplied by itself.

Understanding Fractional Exponents

Fractional exponents are a type of exponent that involves a fraction as the exponent. For example, $2^{\frac{1}{3}}$ means $\sqrt[3]{2}$. The numerator of the fraction represents the root, and the denominator represents the power. In this case, $2^{\frac{1}{3}}$ means the cube root of 2.

Evaluating the Expression $216^{\frac{1}{3}}$

To evaluate the expression $216^{\frac{1}{3}}$, we need to find the cube root of 216. The cube root of a number is a value that, when multiplied by itself twice, gives the original number. In this case, we need to find a number that, when multiplied by itself twice, equals 216.

Finding the Cube Root of 216

To find the cube root of 216, we can start by listing the perfect cubes of numbers. The perfect cubes of numbers are:

  • 13=11^3 = 1

  • 23=82^3 = 8

  • 33=273^3 = 27

  • 43=644^3 = 64

  • 53=1255^3 = 125

  • 63=2166^3 = 216

As we can see, the cube root of 216 is 6, since $6^3 = 216$.

Which Option is Equivalent to $216^{\frac{1}{3}}$?

Based on our evaluation of the expression $216^{\frac{1}{3}}$, we have determined that the cube root of 216 is 6. Therefore, the option that is equivalent to $216^{\frac{1}{3}}$ is:

  • B. 6

Conclusion

In this article, we have explored the concept of exponents and how to find equivalent values. We have evaluated the expression $216^{\frac{1}{3}}$ and determined that the cube root of 216 is 6. Therefore, the option that is equivalent to $216^{\frac{1}{3}}$ is B. 6.

Frequently Asked Questions

  • What is the cube root of 216? The cube root of 216 is 6, since $6^3 = 216$.
  • What is the equivalent value of $216^{\frac{1}{3}}$? The equivalent value of $216^{\frac{1}{3}}$ is 6.

Additional Resources

  • Exponents and Roots: A comprehensive guide to exponents and roots, including examples and practice problems.
  • Cube Roots: A tutorial on finding cube roots, including examples and practice problems.

References

  • "Exponents and Roots" by Math Open Reference
  • "Cube Roots" by Khan Academy

Introduction

Exponents and roots are fundamental concepts in mathematics that help us simplify complex expressions and solve equations. In this article, we will answer some frequently asked questions about exponents and roots, including questions about fractional exponents, cube roots, and more.

Q&A

Q: What is the difference between a square root and a cube root?

A: A square root is a value that, when multiplied by itself, gives the original number. For example, the square root of 16 is 4, since $4^2 = 16$. A cube root is a value that, when multiplied by itself twice, gives the original number. For example, the cube root of 27 is 3, since $3^3 = 27$.

Q: How do I evaluate an expression with a fractional exponent?

A: To evaluate an expression with a fractional exponent, you need to find the root of the number. For example, $2^{\frac{1}{3}}$ means the cube root of 2. To evaluate this expression, you need to find a number that, when multiplied by itself twice, equals 2.

Q: What is the equivalent value of $216^{\frac{1}{3}}$?

A: The equivalent value of $216^{\frac{1}{3}}$ is 6, since $6^3 = 216$.

Q: How do I simplify an expression with a negative exponent?

A: To simplify an expression with a negative exponent, you need to take the reciprocal of the base and change the sign of the exponent. For example, $2^{-3}$ means $\frac{1}{2^3}$, which equals $\frac{1}{8}$.

Q: What is the difference between a rational exponent and a fractional exponent?

A: A rational exponent is a type of exponent that involves a fraction as the exponent. For example, $2^{\frac{1}{3}}$ is a rational exponent. A fractional exponent is a type of exponent that involves a fraction as the exponent, but it is often used to represent a root. For example, $\sqrt[3]{2}$ is a fractional exponent.

Q: How do I evaluate an expression with a mixed exponent?

A: To evaluate an expression with a mixed exponent, you need to simplify the expression by combining the exponents. For example, $2^3 \times 2^2$ means $2^{3+2}$, which equals $2^5$.

Q: What is the equivalent value of $8^{\frac{1}{2}}$?

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