X^4+9x^3+9x^2=-81x

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Solution for X^4+9x^3+9x^2=-81x equation: 


Simplifying
X4 + 9x3 + 9x2 = -81x

Reorder the terms:
X4 + 9x2 + 9x3 = -81x

Solving
X4 + 9x2 + 9x3 = -81x

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '-9x2' to each side of the equation.
X4 + 9x2 + -9x2 + 9x3 = -81x + -9x2

Combine like terms: 9x2 + -9x2 = 0
X4 + 0 + 9x3 = -81x + -9x2
X4 + 9x3 = -81x + -9x2

Add '-9x3' to each side of the equation.
X4 + 9x3 + -9x3 = -81x + -9x2 + -9x3

Combine like terms: 9x3 + -9x3 = 0
X4 + 0 = -81x + -9x2 + -9x3
X4 = -81x + -9x2 + -9x3

Simplifying
X4 = -81x + -9x2 + -9x3

Reorder the terms:
X4 + 81x + 9x2 + 9x3 = -81x + 81x + -9x2 + 9x2 + -9x3 + 9x3

Combine like terms: -81x + 81x = 0
X4 + 81x + 9x2 + 9x3 = 0 + -9x2 + 9x2 + -9x3 + 9x3
X4 + 81x + 9x2 + 9x3 = -9x2 + 9x2 + -9x3 + 9x3

Combine like terms: -9x2 + 9x2 = 0
X4 + 81x + 9x2 + 9x3 = 0 + -9x3 + 9x3
X4 + 81x + 9x2 + 9x3 = -9x3 + 9x3

Combine like terms: -9x3 + 9x3 = 0
X4 + 81x + 9x2 + 9x3 = 0

The solution to this equation could not be determined.

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