X^4-2x^3+8x^2-18x-9=0

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Solution for X^4-2x^3+8x^2-18x-9=0 equation: 


Simplifying
X4 + -2x3 + 8x2 + -18x + -9 = 0

Reorder the terms:
-9 + X4 + -18x + 8x2 + -2x3 = 0

Solving
-9 + X4 + -18x + 8x2 + -2x3 = 0

Solving for variable 'X'.

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

Add '9' to each side of the equation.
-9 + X4 + -18x + 8x2 + 9 + -2x3 = 0 + 9

Reorder the terms:
-9 + 9 + X4 + -18x + 8x2 + -2x3 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + X4 + -18x + 8x2 + -2x3 = 0 + 9
X4 + -18x + 8x2 + -2x3 = 0 + 9

Combine like terms: 0 + 9 = 9
X4 + -18x + 8x2 + -2x3 = 9

Add '18x' to each side of the equation.
X4 + -18x + 8x2 + 18x + -2x3 = 9 + 18x

Reorder the terms:
X4 + -18x + 18x + 8x2 + -2x3 = 9 + 18x

Combine like terms: -18x + 18x = 0
X4 + 0 + 8x2 + -2x3 = 9 + 18x
X4 + 8x2 + -2x3 = 9 + 18x

Add '-8x2' to each side of the equation.
X4 + 8x2 + -8x2 + -2x3 = 9 + 18x + -8x2

Combine like terms: 8x2 + -8x2 = 0
X4 + 0 + -2x3 = 9 + 18x + -8x2
X4 + -2x3 = 9 + 18x + -8x2

Add '2x3' to each side of the equation.
X4 + -2x3 + 2x3 = 9 + 18x + -8x2 + 2x3

Combine like terms: -2x3 + 2x3 = 0
X4 + 0 = 9 + 18x + -8x2 + 2x3
X4 = 9 + 18x + -8x2 + 2x3

Simplifying
X4 = 9 + 18x + -8x2 + 2x3

Reorder the terms:
-9 + X4 + -18x + 8x2 + -2x3 = 9 + 18x + -8x2 + 2x3 + -9 + -18x + 8x2 + -2x3

Reorder the terms:
-9 + X4 + -18x + 8x2 + -2x3 = 9 + -9 + 18x + -18x + -8x2 + 8x2 + 2x3 + -2x3

Combine like terms: 9 + -9 = 0
-9 + X4 + -18x + 8x2 + -2x3 = 0 + 18x + -18x + -8x2 + 8x2 + 2x3 + -2x3
-9 + X4 + -18x + 8x2 + -2x3 = 18x + -18x + -8x2 + 8x2 + 2x3 + -2x3

Combine like terms: 18x + -18x = 0
-9 + X4 + -18x + 8x2 + -2x3 = 0 + -8x2 + 8x2 + 2x3 + -2x3
-9 + X4 + -18x + 8x2 + -2x3 = -8x2 + 8x2 + 2x3 + -2x3

Combine like terms: -8x2 + 8x2 = 0
-9 + X4 + -18x + 8x2 + -2x3 = 0 + 2x3 + -2x3
-9 + X4 + -18x + 8x2 + -2x3 = 2x3 + -2x3

Combine like terms: 2x3 + -2x3 = 0
-9 + X4 + -18x + 8x2 + -2x3 = 0

The solution to this equation could not be determined.

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