n^2+8n+7=-8

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Solution for n^2+8n+7=-8 equation:


Simplifying
n2 + 8n + 7 = -8

Reorder the terms:
7 + 8n + n2 = -8

Solving
7 + 8n + n2 = -8

Solving for variable 'n'.

Reorder the terms:
7 + 8 + 8n + n2 = -8 + 8

Combine like terms: 7 + 8 = 15
15 + 8n + n2 = -8 + 8

Combine like terms: -8 + 8 = 0
15 + 8n + n2 = 0

Factor a trinomial.
(5 + n)(3 + n) = 0

Subproblem 1

Set the factor '(5 + n)' equal to zero and attempt to solve: Simplifying 5 + n = 0 Solving 5 + n = 0 Move all terms containing n to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + n = 0 + -5 Combine like terms: 5 + -5 = 0 0 + n = 0 + -5 n = 0 + -5 Combine like terms: 0 + -5 = -5 n = -5 Simplifying n = -5

Subproblem 2

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

Solution

n = {-5, -3}

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