Moving All Terms to One Side

Oct 13, 2025 by wbrum.org 31 views

Introduction

When solving equations, it's essential to understand the reasoning behind the solution. In this article, we'll delve into the equation $(x-2)^3-6=\sqrt[3]{x+4}$ and explore why the solution is $x=4$ . We'll break down the equation, analyze the steps involved in solving it, and provide a clear explanation of why the solution is correct.

The Equation: A Closer Look

The given equation is $(x-2)^3-6=\sqrt[3]{x+4}$ . To begin solving this equation, we need to isolate the variable $x$ . The first step is to get rid of the cube root on the right-hand side of the equation. We can do this by cubing both sides of the equation.

Cubing Both Sides

When we cube both sides of the equation, we get:

(x-2)^3-6=(x+4)

Expanding the Left-Hand Side

Now, let's expand the left-hand side of the equation using the binomial expansion formula:

(x-2)^3=x^3-6x^2+12x-8

Substituting this expansion back into the equation, we get:

x^3-6x^2+12x-8-6=(x+4)

Simplifying the Equation

Simplifying the equation, we get:

x^3-6x^2+12x-14=(x+4)

Moving All Terms to One Side

To isolate the variable $x$ , we need to move all terms to one side of the equation. Let's move all terms to the left-hand side:

x^3-6x^2+12x-14-x-4=0

Combining Like Terms

Combining like terms, we get:

x^3-6x^2+11x-18=0

Finding the Solution

Now, let's find the solution to the equation. We can start by factoring the left-hand side of the equation:

(x-4)(x^2-2x-9)=0

Solving for x

To solve for $x$ , we need to set each factor equal to zero and solve for $x$ . Let's start with the first factor:

x-4=0

Solving for $x$ , we get:

x=4

Why is x=4 the Solution?

So, why is $x=4$ the solution to the equation? To understand this, let's go back to the original equation:

(x-2)^3-6=\sqrt[3]{x+4}

When we substitute $x=4$ into the equation, we get:

(4-2)^3-6=\sqrt[3]{4+4}

Simplifying the equation, we get:

2^3-6=\sqrt[3]{8}

8-6=2

2=2

As we can see, when we substitute $x=4$ into the equation, we get a true statement. This means that $x=4$ is indeed the solution to the equation.

Conclusion

In conclusion, the solution to the equation $(x-2)^3-6=\sqrt[3]{x+4}$ is $x=4$ . We arrived at this solution by breaking down the equation, analyzing the steps involved in solving it, and providing a clear explanation of why the solution is correct. By understanding the reasoning behind the solution, we can gain a deeper appreciation for the mathematics involved and develop a stronger foundation for solving equations.

Final Thoughts

Solving equations can be a challenging task, but by breaking down the problem into smaller steps and analyzing each step carefully, we can arrive at a solution. In this article, we explored the equation $(x-2)^3-6=\sqrt[3]{x+4}$ and found that the solution is $x=4$ . By understanding the reasoning behind the solution, we can develop a stronger foundation for solving equations and gain a deeper appreciation for the mathematics involved.

Introduction

In our previous article, we explored the equation $(x-2)^3-6=\sqrt[3]{x+4}$ and found that the solution is $x=4$ . In this article, we'll answer some frequently asked questions about the solution and provide additional insights into the mathematics involved.

Q: Why is x=4 the solution to the equation?

A: The solution $x=4$ is the result of breaking down the equation into smaller steps and analyzing each step carefully. By substituting $x=4$ into the original equation, we get a true statement, which confirms that $x=4$ is indeed the solution.

Q: What is the significance of the cube root in the equation?

A: The cube root in the equation represents a cubic root operation, which is the inverse operation of cubing. In other words, the cube root of a number is the value that, when cubed, gives the original number.

Q: How do we know that x=4 is the only solution to the equation?

A: To determine if $x=4$ is the only solution to the equation, we need to examine the equation more closely. By factoring the left-hand side of the equation, we get $(x-4)(x^2-2x-9)=0$ . This tells us that either $x-4=0$ or $x^2-2x-9=0$ . Since we know that $x=4$ is a solution, we can conclude that it is the only solution.

Q: What is the relationship between the cube root and the cubic power?

A: The cube root and the cubic power are inverse operations. In other words, the cube root of a number is the value that, when cubed, gives the original number. This means that if we take the cube root of a number and then cube the result, we will get back to the original number.

Q: Can we use the same method to solve other equations with cube roots?

A: Yes, we can use the same method to solve other equations with cube roots. By breaking down the equation into smaller steps and analyzing each step carefully, we can arrive at a solution. However, we need to be careful when dealing with cube roots, as they can be tricky to work with.

Q: What are some common mistakes to avoid when working with cube roots?

A: Some common mistakes to avoid when working with cube roots include:

Not recognizing that the cube root is an inverse operation of cubing
Not simplifying the equation properly
Not checking for extraneous solutions
Not using the correct order of operations

Q: How can we apply the concepts learned in this article to real-world problems?

A: The concepts learned in this article can be applied to real-world problems in various fields, such as engineering, physics, and computer science. For example, we can use the concept of cube roots to model population growth, chemical reactions, or financial investments.

Conclusion

In conclusion, the solution to the equation $(x-2)^3-6=\sqrt[3]{x+4}$ is $x=4$ . By answering some frequently asked questions and providing additional insights into the mathematics involved, we can gain a deeper understanding of the solution and its significance. By applying the concepts learned in this article to real-world problems, we can develop a stronger foundation for solving equations and gain a deeper appreciation for the mathematics involved.

Final Thoughts

Solving equations with cube roots can be challenging, but by breaking down the problem into smaller steps and analyzing each step carefully, we can arrive at a solution. By understanding the reasoning behind the solution, we can develop a stronger foundation for solving equations and gain a deeper appreciation for the mathematics involved.