Can this system of equations be solved in real numbers?

In summary, a system of equations is a set of two or more equations that involve the same variables and have a solution that makes all of the equations true. Solving systems of equations is important for finding relationships between unknown quantities, especially in real-world situations. Methods for solving systems of equations include substitution, elimination, and graphing. A system of equations has a solution if the equations intersect at a single point, and common mistakes when solving them include errors in arithmetic and forgetting to check for extraneous solutions.
  • #1
anemone
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Solve in real numbers the system below:

$a(b+c-a^3)=b(c+a-b^3)=c(a+b-c^3)=1$
 
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  • #2
a=1, b=1, c=1
a=-1, b=-1, c=-1
 
  • #3
Wilmer said:
a=1, b=1, c=1
a=-1, b=-1, c=-1

Would you mind sharing how you found the solution? :D
 
  • #4
Lazily, by inspection:
ab + ac - a^4 = 1
ab + bc - b^4 = 1
ac + bc - c^4 = 1
 
  • #5
Wilmer said:
a=1, b=1, c=1
a=-1, b=-1, c=-1

Hi Wilmer,

Your answer (without the working, hehehe...) is correct, but the question remains on how we are going to prove those are the only solutions.(Nod)
 

FAQ: Can this system of equations be solved in real numbers?

What is a system of equations?

A system of equations is a set of two or more equations that involve the same variables. The solution to a system of equations is the values of the variables that make all of the equations true simultaneously.

Why is solving systems of equations important?

Solving systems of equations is important because it allows us to find the relationship between multiple unknown quantities. This is especially useful in real-world situations where there are multiple variables that are dependent on each other.

What methods can be used to solve systems of equations?

There are several methods for solving systems of equations, including substitution, elimination, and graphing. Each method has its own advantages and can be used depending on the type of equations and the given information.

How do I know if a system of equations has a solution?

A system of equations has a solution if the equations intersect at a single point, meaning there is one unique solution for the variables. If the equations are parallel, there is no solution, and if the equations are identical, there are infinitely many solutions.

What are some common mistakes when solving systems of equations?

Some common mistakes when solving systems of equations include not properly distributing negative signs, making errors in arithmetic, and forgetting to check for extraneous solutions. It is important to carefully check each step and always verify the final solution.

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