a^2+4a=12

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Solution for a^2+4a=12 equation:


Simplifying
a2 + 4a = 12

Reorder the terms:
4a + a2 = 12

Solving
4a + a2 = 12

Solving for variable 'a'.

Reorder the terms:
-12 + 4a + a2 = 12 + -12

Combine like terms: 12 + -12 = 0
-12 + 4a + a2 = 0

Factor a trinomial.
(-6 + -1a)(2 + -1a) = 0

Subproblem 1

Set the factor '(-6 + -1a)' equal to zero and attempt to solve: Simplifying -6 + -1a = 0 Solving -6 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + -1a = 0 + 6 Combine like terms: -6 + 6 = 0 0 + -1a = 0 + 6 -1a = 0 + 6 Combine like terms: 0 + 6 = 6 -1a = 6 Divide each side by '-1'. a = -6 Simplifying a = -6

Subproblem 2

Set the factor '(2 + -1a)' equal to zero and attempt to solve: Simplifying 2 + -1a = 0 Solving 2 + -1a = 0 Move all terms containing a to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1a = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1a = 0 + -2 -1a = 0 + -2 Combine like terms: 0 + -2 = -2 -1a = -2 Divide each side by '-1'. a = 2 Simplifying a = 2

Solution

a = {-6, 2}

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