a^2-9ac+c^2=-81

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Solution for a^2-9ac+c^2=-81 equation: 


Simplifying
a2 + -9ac + c2 = -81

Reorder the terms:
-9ac + a2 + c2 = -81

Solving
-9ac + a2 + c2 = -81

Solving for variable 'a'.

Reorder the terms:
81 + -9ac + a2 + c2 = -81 + 81

Combine like terms: -81 + 81 = 0
81 + -9ac + a2 + c2 = 0

The solution to this equation could not be determined.

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