Simplifying the Cube Roots

Oct 13, 2025 by wbrum.org 58 views

Understanding the Problem

The given problem involves simplifying an algebraic expression that contains cube roots and powers of a variable x. To simplify the expression, we need to apply the properties of exponents and cube roots.

Simplifying the Cube Roots

The expression contains two cube roots: ${$ \sqrt[3]{x^{10}} $}$ and ${$ \sqrt[3]{8 x} $}$. We can simplify these cube roots by applying the property ${$ \sqrt[3]{a^n} = a^{\frac{n}{3}} $}$.

Simplifying the First Cube Root

Using the property, we can simplify the first cube root as follows:

${$ \sqrt[3]{x^{10}} = x^{\frac{10}{3}} $}$

Simplifying the Second Cube Root

Similarly, we can simplify the second cube root as follows:

${$ \sqrt[3]{8 x} = \sqrt[3]{2^3 x} = 2 x^{\frac{1}{3}} $}$

Substituting the Simplified Cube Roots

Now, we can substitute the simplified cube roots back into the original expression:

${$ 4 \sqrt[3]{x^{10}} + 5 x^3 \sqrt[3]{8 x} = 4 x^{\frac{10}{3}} + 5 x^3 (2 x^{\frac{1}{3}}) $}$

Simplifying the Expression

We can simplify the expression further by applying the distributive property:

${$ 4 x^{\frac{10}{3}} + 10 x^{\frac{10}{3}} $}$

Combining Like Terms

Now, we can combine the like terms:

${$ 14 x^{\frac{10}{3}} $}$

Final Answer

Therefore, the sum of ${$ 4 \sqrt[3]{x^{10}} + 5 x^3 \sqrt[3]{8 x} $}$ in simplest form is ${$ 14 x^{\frac{10}{3}} $}$.

Conclusion

In this problem, we simplified an algebraic expression that contained cube roots and powers of a variable x. We applied the properties of exponents and cube roots to simplify the expression and arrived at the final answer.

Step-by-Step Solution

Here's a step-by-step solution to the problem:

Simplify the first cube root: ${$ \sqrt[3]{x^{10}} = x^{\frac{10}{3}} $}$
Simplify the second cube root: ${$ \sqrt[3]{8 x} = 2 x^{\frac{1}{3}} $}$
Substitute the simplified cube roots back into the original expression: ${$ 4 \sqrt[3]{x^{10}} + 5 x^3 \sqrt[3]{8 x} = 4 x^{\frac{10}{3}} + 5 x^3 (2 x^{\frac{1}{3}}) $}$
Simplify the expression further by applying the distributive property: ${$ 4 x^{\frac{10}{3}} + 10 x^{\frac{10}{3}} $}$
Combine the like terms: ${$ 14 x^{\frac{10}{3}} $}$

Frequently Asked Questions

What is the sum of ${$ 4 \sqrt[3]{x^{10}} + 5 x^3 \sqrt[3]{8 x} $}$ in simplest form?
How do you simplify an algebraic expression that contains cube roots and powers of a variable x?
What are the properties of exponents and cube roots that we need to apply to simplify the expression?

References

Frequently Asked Questions

Q: What is the sum of ${$ 4 \sqrt[3]{x^{10}} + 5 x^3 \sqrt[3]{8 x} $}$ in simplest form?

A: The sum of ${$ 4 \sqrt[3]{x^{10}} + 5 x^3 \sqrt[3]{8 x} $}$ in simplest form is ${$ 14 x^{\frac{10}{3}} $}$.

Q: How do you simplify an algebraic expression that contains cube roots and powers of a variable x?

A: To simplify an algebraic expression that contains cube roots and powers of a variable x, you need to apply the properties of exponents and cube roots. Specifically, you can use the property ${$ \sqrt[3]{a^n} = a^{\frac{n}{3}} $}$ to simplify the cube roots.

Q: What are the properties of exponents and cube roots that we need to apply to simplify the expression?

A: The properties of exponents and cube roots that we need to apply to simplify the expression are:

${$ \sqrt[3]{a^n} = a^{\frac{n}{3}} $}$
${$ a^m \cdot a^n = a^{m+n} $}$
${$ a^m \cdot b^m = (ab)^m $}$

Q: How do you combine like terms in an algebraic expression?

A: To combine like terms in an algebraic expression, you need to identify the terms that have the same variable and exponent, and then add or subtract their coefficients.

Q: What is the final answer to the problem?

A: The final answer to the problem is ${$ 14 x^{\frac{10}{3}} $}$.

Step-by-Step Solution

Here's a step-by-step solution to the problem:

Simplify the first cube root: ${$ \sqrt[3]{x^{10}} = x^{\frac{10}{3}} $}$
Simplify the second cube root: ${$ \sqrt[3]{8 x} = 2 x^{\frac{1}{3}} $}$
Substitute the simplified cube roots back into the original expression: ${$ 4 \sqrt[3]{x^{10}} + 5 x^3 \sqrt[3]{8 x} = 4 x^{\frac{10}{3}} + 5 x^3 (2 x^{\frac{1}{3}}) $}$
Simplify the expression further by applying the distributive property: ${$ 4 x^{\frac{10}{3}} + 10 x^{\frac{10}{3}} $}$
Combine the like terms: ${$ 14 x^{\frac{10}{3}} $}$