a^3-18a^2=-81a

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Solution for a^3-18a^2=-81a equation:


Simplifying
a3 + -18a2 = -81a

Reorder the terms:
-18a2 + a3 = -81a

Solving
-18a2 + a3 = -81a

Solving for variable 'a'.

Reorder the terms:
81a + -18a2 + a3 = -81a + 81a

Combine like terms: -81a + 81a = 0
81a + -18a2 + a3 = 0

Factor out the Greatest Common Factor (GCF), 'a'.
a(81 + -18a + a2) = 0

Factor a trinomial.
a((9 + -1a)(9 + -1a)) = 0

Subproblem 1

Set the factor 'a' equal to zero and attempt to solve: Simplifying a = 0 Solving a = 0 Move all terms containing a to the left, all other terms to the right. Simplifying a = 0

Subproblem 2

Set the factor '(9 + -1a)' equal to zero and attempt to solve: Simplifying 9 + -1a = 0 Solving 9 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1a = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1a = 0 + -9 -1a = 0 + -9 Combine like terms: 0 + -9 = -9 -1a = -9 Divide each side by '-1'. a = 9 Simplifying a = 9

Subproblem 3

Set the factor '(9 + -1a)' equal to zero and attempt to solve: Simplifying 9 + -1a = 0 Solving 9 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + -1a = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -1a = 0 + -9 -1a = 0 + -9 Combine like terms: 0 + -9 = -9 -1a = -9 Divide each side by '-1'. a = 9 Simplifying a = 9

Solution

a = {0, 9, 9}

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