Recall the Definition of a Radical

Oct 13, 2025 by wbrum.org 42 views

Introduction

Understanding the Problem In this article, we will simplify the expression $\sqrt[5]{7} \cdot \sqrt[5]{5}$ using the properties of exponents and radicals. The expression involves the multiplication of two fifth roots, which can be simplified using the rules of exponents.

The Properties of Exponents and Radicals

Recall the Definition of a Radical A radical is a mathematical expression that involves the extraction of a root of a number. In this case, we have two fifth roots, $\sqrt[5]{7}$ and $\sqrt[5]{5}$ . The fifth root of a number is the value that, when raised to the power of 5, gives the original number.

Recall the Rule for Multiplying Radicals When multiplying two radicals, we can multiply the numbers inside the radicals and keep the same root. In other words, $\sqrt[n]{a} \cdot \sqrt[n]{b} = \sqrt[n]{ab}$ .

Simplifying the Expression

Using the rule for multiplying radicals, we can simplify the expression $\sqrt[5]{7} \cdot \sqrt[5]{5}$ as follows:

\sqrt[5]{7} \cdot \sqrt[5]{5} = \sqrt[5]{7 \cdot 5}

Evaluating the Expression

Now that we have simplified the expression, we can evaluate it by calculating the value of $7 \cdot 5$ .

7 \cdot 5 = 35

Conclusion

Therefore, the simplified expression is $\sqrt[5]{35}$ .

Final Answer

The final answer is $\boxed{\sqrt[5]{35}}$ .

Additional Examples

Here are a few additional examples of simplifying expressions involving radicals:

$\sqrt[3]{2} \cdot \sqrt[3]{4} = \sqrt[3]{2 \cdot 4} = \sqrt[3]{8}$
$\sqrt[4]{3} \cdot \sqrt[4]{9} = \sqrt[4]{3 \cdot 9} = \sqrt[4]{27}$

Tips and Tricks

When multiplying two radicals, always multiply the numbers inside the radicals and keep the same root.
Use the rule for multiplying radicals to simplify expressions involving radicals.
Evaluate the expression by calculating the value of the product of the numbers inside the radicals.

Common Mistakes

Failing to multiply the numbers inside the radicals when multiplying two radicals.
Not keeping the same root when multiplying two radicals.
Not evaluating the expression by calculating the value of the product of the numbers inside the radicals.

Conclusion

In this article, we simplified the expression $\sqrt[5]{7} \cdot \sqrt[5]{5}$ using the properties of exponents and radicals. We used the rule for multiplying radicals to simplify the expression and evaluated the result by calculating the value of the product of the numbers inside the radicals. We also provided additional examples and tips and tricks for simplifying expressions involving radicals.

Introduction

In our previous article, we simplified the expression $\sqrt[5]{7} \cdot \sqrt[5]{5}$ using the properties of exponents and radicals. In this article, we will answer some frequently asked questions about simplifying expressions involving radicals.

Q&A

Q: What is the rule for multiplying radicals?

A: The rule for multiplying radicals is that when multiplying two radicals, we can multiply the numbers inside the radicals and keep the same root. In other words, $\sqrt[n]{a} \cdot \sqrt[n]{b} = \sqrt[n]{ab}$ .

Q: How do I simplify an expression involving radicals?

A: To simplify an expression involving radicals, you can use the rule for multiplying radicals. Multiply the numbers inside the radicals and keep the same root. Then, evaluate the expression by calculating the value of the product of the numbers inside the radicals.

Q: What is the difference between a radical and an exponent?

A: A radical is a mathematical expression that involves the extraction of a root of a number. An exponent, on the other hand, is a mathematical expression that involves raising a number to a power. For example, $\sqrt[5]{7}$ is a radical, while $7^5$ is an exponent.

Q: Can I simplify an expression involving radicals by using the properties of exponents?

A: Yes, you can simplify an expression involving radicals by using the properties of exponents. For example, $\sqrt[5]{7} \cdot \sqrt[5]{5} = \sqrt[5]{7 \cdot 5} = \sqrt[5]{35}$ .

Q: What is the final answer to the expression $\sqrt[5]{7} \cdot \sqrt[5]{5}$ ?

A: The final answer to the expression $\sqrt[5]{7} \cdot \sqrt[5]{5}$ is $\boxed{\sqrt[5]{35}}$ .

Q: Can I use the rule for multiplying radicals to simplify expressions involving different roots?

A: Yes, you can use the rule for multiplying radicals to simplify expressions involving different roots. For example, $\sqrt[3]{2} \cdot \sqrt[4]{3} = \sqrt[12]{2 \cdot 3}$ .

Q: What are some common mistakes to avoid when simplifying expressions involving radicals?

A: Some common mistakes to avoid when simplifying expressions involving radicals include:

Failing to multiply the numbers inside the radicals when multiplying two radicals.
Not keeping the same root when multiplying two radicals.
Not evaluating the expression by calculating the value of the product of the numbers inside the radicals.

Conclusion

In this article, we answered some frequently asked questions about simplifying expressions involving radicals. We provided examples and explanations to help you understand the rule for multiplying radicals and how to simplify expressions involving radicals. We also highlighted some common mistakes to avoid when simplifying expressions involving radicals.

Additional Resources

For more information on radicals and exponents, see our previous article on simplifying expressions involving radicals.
For more examples and practice problems, see our additional resources section.

Final Answer

The final answer is $\boxed{\sqrt[5]{35}}$ .