To solve this quadratic equation, we will first expand the left side of the equation:
(х^2 + х) * (х^2 + х - 5) = 84
Expanding, we get:
х^4 + х^3 - 5х^2 + х^3 + х^2 - 5x = 84
Combine like terms:
х^4 + 2х^3 - 4х^2 - 5x = 84
Now, bring all terms to one side of the equation:
х^4 + 2х^3 - 4х^2 - 5x - 84 = 0
Now, we have a quartic equation that we can solve. You can use methods like factoring, completing the square, or using the quadratic formula to solve for the value of x.
To solve this quadratic equation, we will first expand the left side of the equation:
(х^2 + х) * (х^2 + х - 5) = 84
Expanding, we get:
х^4 + х^3 - 5х^2 + х^3 + х^2 - 5x = 84
Combine like terms:
х^4 + 2х^3 - 4х^2 - 5x = 84
Now, bring all terms to one side of the equation:
х^4 + 2х^3 - 4х^2 - 5x - 84 = 0
Now, we have a quartic equation that we can solve. You can use methods like factoring, completing the square, or using the quadratic formula to solve for the value of x.