x^2+6x+8=-x^2-8x-16

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Solution for x^2+6x+8=-x^2-8x-16 equation:


Simplifying
x2 + 6x + 8 = -1x2 + -8x + -16

Reorder the terms:
8 + 6x + x2 = -1x2 + -8x + -16

Reorder the terms:
8 + 6x + x2 = -16 + -8x + -1x2

Solving
8 + 6x + x2 = -16 + -8x + -1x2

Solving for variable 'x'.

Reorder the terms:
8 + 16 + 6x + 8x + x2 + x2 = -16 + -8x + -1x2 + 16 + 8x + x2

Combine like terms: 8 + 16 = 24
24 + 6x + 8x + x2 + x2 = -16 + -8x + -1x2 + 16 + 8x + x2

Combine like terms: 6x + 8x = 14x
24 + 14x + x2 + x2 = -16 + -8x + -1x2 + 16 + 8x + x2

Combine like terms: x2 + x2 = 2x2
24 + 14x + 2x2 = -16 + -8x + -1x2 + 16 + 8x + x2

Reorder the terms:
24 + 14x + 2x2 = -16 + 16 + -8x + 8x + -1x2 + x2

Combine like terms: -16 + 16 = 0
24 + 14x + 2x2 = 0 + -8x + 8x + -1x2 + x2
24 + 14x + 2x2 = -8x + 8x + -1x2 + x2

Combine like terms: -8x + 8x = 0
24 + 14x + 2x2 = 0 + -1x2 + x2
24 + 14x + 2x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
24 + 14x + 2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(12 + 7x + x2) = 0

Factor a trinomial.
2((4 + x)(3 + x)) = 0

Ignore the factor 2.

Subproblem 1

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

Subproblem 2

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

Solution

x = {-4, -3}

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