3a^2+13a=-12

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Solution for 3a^2+13a=-12 equation:


Simplifying
3a2 + 13a = -12

Reorder the terms:
13a + 3a2 = -12

Solving
13a + 3a2 = -12

Solving for variable 'a'.

Reorder the terms:
12 + 13a + 3a2 = -12 + 12

Combine like terms: -12 + 12 = 0
12 + 13a + 3a2 = 0

Factor a trinomial.
(3 + a)(4 + 3a) = 0

Subproblem 1

Set the factor '(3 + a)' equal to zero and attempt to solve: Simplifying 3 + a = 0 Solving 3 + a = 0 Move all terms containing a to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + a = 0 + -3 Combine like terms: 3 + -3 = 0 0 + a = 0 + -3 a = 0 + -3 Combine like terms: 0 + -3 = -3 a = -3 Simplifying a = -3

Subproblem 2

Set the factor '(4 + 3a)' equal to zero and attempt to solve: Simplifying 4 + 3a = 0 Solving 4 + 3a = 0 Move all terms containing a to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 3a = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 3a = 0 + -4 3a = 0 + -4 Combine like terms: 0 + -4 = -4 3a = -4 Divide each side by '3'. a = -1.333333333 Simplifying a = -1.333333333

Solution

a = {-3, -1.333333333}

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