Roots of Equation: Sum of Fourth Powers | Math Homework

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In summary, the sum of fourth powers in the roots of an equation is a mathematical expression that involves raising each root to the fourth power and then adding them together. It is important in solving equations as it helps us find the roots of the equation. To find the sum of fourth powers in an equation, we first need to identify all the roots and then raise each root to the fourth power and add them together. The coefficients in an equation are directly related to the sum of fourth powers in the roots, which can be expressed in terms of the coefficients using Vieta's formulas. The sum of fourth powers can also be negative, especially when the roots of the equation are complex numbers.
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zorro
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Homework Statement



The sum of the fourth powers of the roots of the equation x3+x+1=0 is?

The Attempt at a Solution



Is there any shortest method to find out the answer using some formulae? I know a method but its very very lengthy and time consuming.
 
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Is it this method you know or another method?
 
  • #3
I was just looking for that. Thank you so much!
 

1. What is the sum of fourth powers in the roots of an equation?

The sum of fourth powers in the roots of an equation is a mathematical expression that involves raising each root to the fourth power and then adding them together.

2. Why is the sum of fourth powers important in solving equations?

The sum of fourth powers is important in solving equations because it helps us find the roots of the equation. By simplifying the equation to a sum of fourth powers, we can easily solve for the roots using methods such as factoring or the quadratic formula.

3. How do you find the sum of fourth powers in an equation?

To find the sum of fourth powers in an equation, we first need to identify all the roots of the equation. Then, we raise each root to the fourth power and add them together to get the sum.

4. What is the connection between the sum of fourth powers and the coefficients in an equation?

The coefficients in an equation are directly related to the sum of fourth powers in the roots. In fact, the sum of fourth powers can be expressed in terms of the coefficients using the Vieta's formulas.

5. Can the sum of fourth powers be negative?

Yes, the sum of fourth powers can be negative. This can occur when the roots of the equation are complex numbers, which have both real and imaginary parts. In this case, the sum of fourth powers may have a negative real part, resulting in a negative overall value.

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