What Is The Value Of $x$ In The Equation $\sqrt[3]{x} + 3 = 9$?A. 4 B. 36 C. 108 D. 216

Understanding the Problem

The given equation is a cubic root equation, where the variable $x$ is enclosed within a cubic root. The equation is $\sqrt[3]{x} + 3 = 9$. To find the value of $x$, we need to isolate the cubic root term and then solve for $x$. This equation involves a cubic root, which is a non-linear operation, making it a bit more complex than linear equations.

Isolating the Cubic Root Term

To isolate the cubic root term, we need to subtract 3 from both sides of the equation. This will give us the value of the cubic root term alone. The equation becomes $\sqrt[3]{x} = 9 - 3$.

Simplifying the Equation

Now, we simplify the right-hand side of the equation by subtracting 3 from 9. This gives us $\sqrt[3]{x} = 6$.

Eliminating the Cubic Root

To eliminate the cubic root, we need to cube both sides of the equation. This will give us the value of $x$ without the cubic root. The equation becomes $x = 6^3$.

Calculating the Value of $x$

Now, we calculate the value of $x$ by cubing 6. This gives us $x = 216$.

Conclusion

In conclusion, the value of $x$ in the equation $\sqrt[3]{x} + 3 = 9$ is 216. This is the correct answer among the given options.

Step-by-Step Solution

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

1. Isolate the cubic root term by subtracting 3 from both sides of the equation.
2. Simplify the right-hand side of the equation by subtracting 3 from 9.
3. Eliminate the cubic root by cubing both sides of the equation.
4. Calculate the value of $x$ by cubing 6.

Common Mistakes to Avoid

Here are some common mistakes to avoid when solving this problem:

• Not isolating the cubic root term correctly.
• Not simplifying the right-hand side of the equation correctly.
• Not eliminating the cubic root correctly.
• Not calculating the value of $x$ correctly.

Real-World Applications

This problem has real-world applications in various fields, such as:

• Physics: When dealing with cubic roots in physics problems, such as calculating the volume of a cube.
• Engineering: When designing systems that involve cubic roots, such as calculating the stress on a material.
• Computer Science: When working with algorithms that involve cubic roots, such as calculating the complexity of an algorithm.

Tips and Tricks

Here are some tips and tricks to help you solve this problem:

• Make sure to isolate the cubic root term correctly.
• Simplify the right-hand side of the equation correctly.
• Eliminate the cubic root correctly.
• Calculate the value of $x$ correctly.

Frequently Asked Questions

Here are some frequently asked questions related to this problem:

• What is the value of $x$ in the equation $\sqrt[3]{x} + 3 = 9$?
• How do I isolate the cubic root term in the equation?
• How do I eliminate the cubic root in the equation?
• What are the real-world applications of this problem?

Conclusion

In conclusion, the value of $x$ in the equation $\sqrt[3]{x} + 3 = 9$ is 216. This is the correct answer among the given options. By following the step-by-step solution and avoiding common mistakes, you can solve this problem correctly.