(a^3+2a^2-9a-18)=0

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Solution for (a^3+2a^2-9a-18)=0 equation: 


Simplifying
(a3 + 2a2 + -9a + -18) = 0

Reorder the terms:
(-18 + -9a + 2a2 + a3) = 0

Remove parenthesis around (-18 + -9a + 2a2 + a3)
-18 + -9a + 2a2 + a3 = 0

Solving
-18 + -9a + 2a2 + a3 = 0

Solving for variable 'a'.

The solution to this equation could not be determined.

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