X^3-4x^2-9x+81=0

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Solution for X^3-4x^2-9x+81=0 equation:


Simplifying
X3 + -4x2 + -9x + 81 = 0

Reorder the terms:
81 + X3 + -9x + -4x2 = 0

Solving
81 + X3 + -9x + -4x2 = 0

Solving for variable 'X'.

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

Add '-81' to each side of the equation.
81 + X3 + -9x + -81 + -4x2 = 0 + -81

Reorder the terms:
81 + -81 + X3 + -9x + -4x2 = 0 + -81

Combine like terms: 81 + -81 = 0
0 + X3 + -9x + -4x2 = 0 + -81
X3 + -9x + -4x2 = 0 + -81

Combine like terms: 0 + -81 = -81
X3 + -9x + -4x2 = -81

Add '9x' to each side of the equation.
X3 + -9x + 9x + -4x2 = -81 + 9x

Combine like terms: -9x + 9x = 0
X3 + 0 + -4x2 = -81 + 9x
X3 + -4x2 = -81 + 9x

Add '4x2' to each side of the equation.
X3 + -4x2 + 4x2 = -81 + 9x + 4x2

Combine like terms: -4x2 + 4x2 = 0
X3 + 0 = -81 + 9x + 4x2
X3 = -81 + 9x + 4x2

Simplifying
X3 = -81 + 9x + 4x2

Reorder the terms:
81 + X3 + -9x + -4x2 = -81 + 9x + 4x2 + 81 + -9x + -4x2

Reorder the terms:
81 + X3 + -9x + -4x2 = -81 + 81 + 9x + -9x + 4x2 + -4x2

Combine like terms: -81 + 81 = 0
81 + X3 + -9x + -4x2 = 0 + 9x + -9x + 4x2 + -4x2
81 + X3 + -9x + -4x2 = 9x + -9x + 4x2 + -4x2

Combine like terms: 9x + -9x = 0
81 + X3 + -9x + -4x2 = 0 + 4x2 + -4x2
81 + X3 + -9x + -4x2 = 4x2 + -4x2

Combine like terms: 4x2 + -4x2 = 0
81 + X3 + -9x + -4x2 = 0

The solution to this equation could not be determined.

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