z^2=18-72

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Solution for z^2=18-72 equation: 


Simplifying
z2 = 18 + -72

Combine like terms: 18 + -72 = -54
z2 = -54

Solving
z2 = -54

Solving for variable 'z'.

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

Simplifying
z2 = -54

Reorder the terms:
54 + z2 = -54 + 54

Combine like terms: -54 + 54 = 0
54 + z2 = 0

The solution to this equation could not be determined.

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