X^3+3x^2-18=0

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Solution for X^3+3x^2-18=0 equation: 


Simplifying
X3 + 3x2 + -18 = 0

Reorder the terms:
-18 + X3 + 3x2 = 0

Solving
-18 + X3 + 3x2 = 0

Solving for variable 'X'.

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

Add '18' to each side of the equation.
-18 + X3 + 18 + 3x2 = 0 + 18

Reorder the terms:
-18 + 18 + X3 + 3x2 = 0 + 18

Combine like terms: -18 + 18 = 0
0 + X3 + 3x2 = 0 + 18
X3 + 3x2 = 0 + 18

Combine like terms: 0 + 18 = 18
X3 + 3x2 = 18

Add '-3x2' to each side of the equation.
X3 + 3x2 + -3x2 = 18 + -3x2

Combine like terms: 3x2 + -3x2 = 0
X3 + 0 = 18 + -3x2
X3 = 18 + -3x2

Simplifying
X3 = 18 + -3x2

Reorder the terms:
-18 + X3 + 3x2 = 18 + -3x2 + -18 + 3x2

Reorder the terms:
-18 + X3 + 3x2 = 18 + -18 + -3x2 + 3x2

Combine like terms: 18 + -18 = 0
-18 + X3 + 3x2 = 0 + -3x2 + 3x2
-18 + X3 + 3x2 = -3x2 + 3x2

Combine like terms: -3x2 + 3x2 = 0
-18 + X3 + 3x2 = 0

The solution to this equation could not be determined.

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