2a^2+8a+12=4

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Solution for 2a^2+8a+12=4 equation:


Simplifying
2a2 + 8a + 12 = 4

Reorder the terms:
12 + 8a + 2a2 = 4

Solving
12 + 8a + 2a2 = 4

Solving for variable 'a'.

Reorder the terms:
12 + -4 + 8a + 2a2 = 4 + -4

Combine like terms: 12 + -4 = 8
8 + 8a + 2a2 = 4 + -4

Combine like terms: 4 + -4 = 0
8 + 8a + 2a2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(4 + 4a + a2) = 0

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

Ignore the factor 2.

Subproblem 1

Set the factor '(2 + a)' equal to zero and attempt to solve: Simplifying 2 + a = 0 Solving 2 + a = 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 + a = 0 + -2 Combine like terms: 2 + -2 = 0 0 + a = 0 + -2 a = 0 + -2 Combine like terms: 0 + -2 = -2 a = -2 Simplifying a = -2

Subproblem 2

Set the factor '(2 + a)' equal to zero and attempt to solve: Simplifying 2 + a = 0 Solving 2 + a = 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 + a = 0 + -2 Combine like terms: 2 + -2 = 0 0 + a = 0 + -2 a = 0 + -2 Combine like terms: 0 + -2 = -2 a = -2 Simplifying a = -2

Solution

a = {-2, -2}

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