X^3+3x^2-18x-40=0

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Solution for X^3+3x^2-18x-40=0 equation:


Simplifying
X3 + 3x2 + -18x + -40 = 0

Reorder the terms:
-40 + X3 + -18x + 3x2 = 0

Solving
-40 + X3 + -18x + 3x2 = 0

Solving for variable 'X'.

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

Add '40' to each side of the equation.
-40 + X3 + -18x + 40 + 3x2 = 0 + 40

Reorder the terms:
-40 + 40 + X3 + -18x + 3x2 = 0 + 40

Combine like terms: -40 + 40 = 0
0 + X3 + -18x + 3x2 = 0 + 40
X3 + -18x + 3x2 = 0 + 40

Combine like terms: 0 + 40 = 40
X3 + -18x + 3x2 = 40

Add '18x' to each side of the equation.
X3 + -18x + 18x + 3x2 = 40 + 18x

Combine like terms: -18x + 18x = 0
X3 + 0 + 3x2 = 40 + 18x
X3 + 3x2 = 40 + 18x

Add '-3x2' to each side of the equation.
X3 + 3x2 + -3x2 = 40 + 18x + -3x2

Combine like terms: 3x2 + -3x2 = 0
X3 + 0 = 40 + 18x + -3x2
X3 = 40 + 18x + -3x2

Simplifying
X3 = 40 + 18x + -3x2

Reorder the terms:
-40 + X3 + -18x + 3x2 = 40 + 18x + -3x2 + -40 + -18x + 3x2

Reorder the terms:
-40 + X3 + -18x + 3x2 = 40 + -40 + 18x + -18x + -3x2 + 3x2

Combine like terms: 40 + -40 = 0
-40 + X3 + -18x + 3x2 = 0 + 18x + -18x + -3x2 + 3x2
-40 + X3 + -18x + 3x2 = 18x + -18x + -3x2 + 3x2

Combine like terms: 18x + -18x = 0
-40 + X3 + -18x + 3x2 = 0 + -3x2 + 3x2
-40 + X3 + -18x + 3x2 = -3x2 + 3x2

Combine like terms: -3x2 + 3x2 = 0
-40 + X3 + -18x + 3x2 = 0

The solution to this equation could not be determined.

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