z^4+9z^2+18=0

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Solution for z^4+9z^2+18=0 equation:


Simplifying
z4 + 9z2 + 18 = 0

Reorder the terms:
18 + 9z2 + z4 = 0

Solving
18 + 9z2 + z4 = 0

Solving for variable 'z'.

Factor a trinomial.
(6 + z2)(3 + z2) = 0

Subproblem 1

Set the factor '(6 + z2)' equal to zero and attempt to solve: Simplifying 6 + z2 = 0 Solving 6 + z2 = 0 Move all terms containing z to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + z2 = 0 + -6 Combine like terms: 6 + -6 = 0 0 + z2 = 0 + -6 z2 = 0 + -6 Combine like terms: 0 + -6 = -6 z2 = -6 Simplifying z2 = -6 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined.

Subproblem 2

Set the factor '(3 + z2)' equal to zero and attempt to solve: Simplifying 3 + z2 = 0 Solving 3 + z2 = 0 Move all terms containing z to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + z2 = 0 + -3 Combine like terms: 3 + -3 = 0 0 + z2 = 0 + -3 z2 = 0 + -3 Combine like terms: 0 + -3 = -3 z2 = -3 Simplifying z2 = -3 The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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