4a^2+36a+81=0

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Solution for 4a^2+36a+81=0 equation:


Simplifying
4a2 + 36a + 81 = 0

Reorder the terms:
81 + 36a + 4a2 = 0

Solving
81 + 36a + 4a2 = 0

Solving for variable 'a'.

Factor a trinomial.
(9 + 2a)(9 + 2a) = 0

Subproblem 1

Set the factor '(9 + 2a)' equal to zero and attempt to solve: Simplifying 9 + 2a = 0 Solving 9 + 2a = 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 + 2a = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 2a = 0 + -9 2a = 0 + -9 Combine like terms: 0 + -9 = -9 2a = -9 Divide each side by '2'. a = -4.5 Simplifying a = -4.5

Subproblem 2

Set the factor '(9 + 2a)' equal to zero and attempt to solve: Simplifying 9 + 2a = 0 Solving 9 + 2a = 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 + 2a = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 2a = 0 + -9 2a = 0 + -9 Combine like terms: 0 + -9 = -9 2a = -9 Divide each side by '2'. a = -4.5 Simplifying a = -4.5

Solution

a = {-4.5, -4.5}

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