Factoring x^3+y^3+z^3: Conditions & Solutions

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In summary, factoring x^3+y^3+z^3 involves breaking down the expression into smaller expressions that can be multiplied together. The conditions for factoring x^3+y^3+z^3 require the expression to be written in the form of a^3+b^3+c^3. The solutions for factoring x^3+y^3+z^3 depend on the specific values of a, b, and c. If the terms are not perfect cubes, the expression cannot be factored. Factoring x^3+y^3+z^3 can be useful in simplifying expressions, solving equations, and identifying patterns in mathematics.
  • #1
JNeutron2186
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Hey everyone first time poster here, I need help with some factoring of cubes. I know this might tie closely to Diophantine equations but here goes.

Under what condition is the expression x^3+y^3+z^3 factorable? Where x,y,z are positive whole numbers.
 
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  • #2
well it seems to factor if x=1, y=2, z=3, and if x=y=z ≥ 2, and more generally if gcd(x,y,z) > 1.
 
  • #3
My bad for not stating before. Let's assume the gcd(x,y,z) =1 and gcd(x,y)>1
 

1. What is factoring x^3+y^3+z^3?

Factoring x^3+y^3+z^3 involves finding the factors of the expression x^3+y^3+z^3, which means breaking it down into smaller expressions that can be multiplied together to get the original expression.

2. What are the conditions for factoring x^3+y^3+z^3?

In order to factor x^3+y^3+z^3, the expression must be written in a specific form known as the sum of cubes. This means that all three terms must be perfect cubes, and the expression must follow the pattern a^3+b^3+c^3, where a, b, and c are any real numbers.

3. What are the solutions for factoring x^3+y^3+z^3?

The solutions for factoring x^3+y^3+z^3 will depend on the specific values of a, b, and c in the expression. Generally, the expression can be factored into (a+b+c)(a^2+b^2+c^2-ab-bc-ca), but this may vary depending on the values of a, b, and c.

4. Can x^3+y^3+z^3 be factored if the terms are not perfect cubes?

No, x^3+y^3+z^3 cannot be factored if the terms are not perfect cubes. In order to factor the expression, it must follow the specific form of a^3+b^3+c^3, where a, b, and c are any real numbers.

5. How can factoring x^3+y^3+z^3 be useful in mathematics?

Factoring x^3+y^3+z^3 can be useful in simplifying complex expressions and solving equations. It can also help in identifying patterns and relationships between different terms in an expression. Additionally, factoring can be used in various mathematical concepts such as polynomial functions and algebraic fractions.

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