z^3-i*z^2+9z-18=0

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Solution for z^3-i*z^2+9z-18=0 equation:


Simplifying
z3 + -1i * z2 + 9z + -18 = 0

Multiply i * z2
z3 + -1iz2 + 9z + -18 = 0

Reorder the terms:
-18 + -1iz2 + 9z + z3 = 0

Solving
-18 + -1iz2 + 9z + z3 = 0

Solving for variable 'i'.

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

Add '18' to each side of the equation.
-18 + -1iz2 + 9z + 18 + z3 = 0 + 18

Reorder the terms:
-18 + 18 + -1iz2 + 9z + z3 = 0 + 18

Combine like terms: -18 + 18 = 0
0 + -1iz2 + 9z + z3 = 0 + 18
-1iz2 + 9z + z3 = 0 + 18

Combine like terms: 0 + 18 = 18
-1iz2 + 9z + z3 = 18

Add '-9z' to each side of the equation.
-1iz2 + 9z + -9z + z3 = 18 + -9z

Combine like terms: 9z + -9z = 0
-1iz2 + 0 + z3 = 18 + -9z
-1iz2 + z3 = 18 + -9z

Add '-1z3' to each side of the equation.
-1iz2 + z3 + -1z3 = 18 + -9z + -1z3

Combine like terms: z3 + -1z3 = 0
-1iz2 + 0 = 18 + -9z + -1z3
-1iz2 = 18 + -9z + -1z3

Divide each side by '-1z2'.
i = -18z-2 + 9z-1 + z

Simplifying
i = -18z-2 + 9z-1 + z

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