(x+2)(x+8)=-5

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Solution for (x+2)(x+8)=-5 equation:


Simplifying
(x + 2)(x + 8) = -5

Reorder the terms:
(2 + x)(x + 8) = -5

Reorder the terms:
(2 + x)(8 + x) = -5

Multiply (2 + x) * (8 + x)
(2(8 + x) + x(8 + x)) = -5
((8 * 2 + x * 2) + x(8 + x)) = -5
((16 + 2x) + x(8 + x)) = -5
(16 + 2x + (8 * x + x * x)) = -5
(16 + 2x + (8x + x2)) = -5

Combine like terms: 2x + 8x = 10x
(16 + 10x + x2) = -5

Solving
16 + 10x + x2 = -5

Solving for variable 'x'.

Reorder the terms:
16 + 5 + 10x + x2 = -5 + 5

Combine like terms: 16 + 5 = 21
21 + 10x + x2 = -5 + 5

Combine like terms: -5 + 5 = 0
21 + 10x + x2 = 0

Factor a trinomial.
(7 + x)(3 + x) = 0

Subproblem 1

Set the factor '(7 + x)' equal to zero and attempt to solve: Simplifying 7 + x = 0 Solving 7 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + x = 0 + -7 x = 0 + -7 Combine like terms: 0 + -7 = -7 x = -7 Simplifying x = -7

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 = {-7, -3}

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