x^4+2ix^3+x^2-8x-1=0

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Solution for x^4+2ix^3+x^2-8x-1=0 equation:


Simplifying
x4 + 2ix3 + x2 + -8x + -1 = 0

Reorder the terms:
-1 + 2ix3 + -8x + x2 + x4 = 0

Solving
-1 + 2ix3 + -8x + x2 + x4 = 0

Solving for variable 'i'.

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

Add '1' to each side of the equation.
-1 + 2ix3 + -8x + x2 + 1 + x4 = 0 + 1

Reorder the terms:
-1 + 1 + 2ix3 + -8x + x2 + x4 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 2ix3 + -8x + x2 + x4 = 0 + 1
2ix3 + -8x + x2 + x4 = 0 + 1

Combine like terms: 0 + 1 = 1
2ix3 + -8x + x2 + x4 = 1

Add '8x' to each side of the equation.
2ix3 + -8x + x2 + 8x + x4 = 1 + 8x

Reorder the terms:
2ix3 + -8x + 8x + x2 + x4 = 1 + 8x

Combine like terms: -8x + 8x = 0
2ix3 + 0 + x2 + x4 = 1 + 8x
2ix3 + x2 + x4 = 1 + 8x

Add '-1x2' to each side of the equation.
2ix3 + x2 + -1x2 + x4 = 1 + 8x + -1x2

Combine like terms: x2 + -1x2 = 0
2ix3 + 0 + x4 = 1 + 8x + -1x2
2ix3 + x4 = 1 + 8x + -1x2

Add '-1x4' to each side of the equation.
2ix3 + x4 + -1x4 = 1 + 8x + -1x2 + -1x4

Combine like terms: x4 + -1x4 = 0
2ix3 + 0 = 1 + 8x + -1x2 + -1x4
2ix3 = 1 + 8x + -1x2 + -1x4

Divide each side by '2x3'.
i = 0.5x-3 + 4x-2 + -0.5x-1 + -0.5x

Simplifying
i = 0.5x-3 + 4x-2 + -0.5x-1 + -0.5x

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