n^2+16n-92=-9

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Solution for n^2+16n-92=-9 equation:


Simplifying
n2 + 16n + -92 = -9

Reorder the terms:
-92 + 16n + n2 = -9

Solving
-92 + 16n + n2 = -9

Solving for variable 'n'.

Reorder the terms:
-92 + 9 + 16n + n2 = -9 + 9

Combine like terms: -92 + 9 = -83
-83 + 16n + n2 = -9 + 9

Combine like terms: -9 + 9 = 0
-83 + 16n + n2 = 0

Begin completing the square.

Move the constant term to the right:

Add '83' to each side of the equation.
-83 + 16n + 83 + n2 = 0 + 83

Reorder the terms:
-83 + 83 + 16n + n2 = 0 + 83

Combine like terms: -83 + 83 = 0
0 + 16n + n2 = 0 + 83
16n + n2 = 0 + 83

Combine like terms: 0 + 83 = 83
16n + n2 = 83

The n term is 16n.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16n + 64 + n2 = 83 + 64

Reorder the terms:
64 + 16n + n2 = 83 + 64

Combine like terms: 83 + 64 = 147
64 + 16n + n2 = 147

Factor a perfect square on the left side:
(n + 8)(n + 8) = 147

Calculate the square root of the right side: 12.124355653

Break this problem into two subproblems by setting 
(n + 8) equal to 12.124355653 and -12.124355653.

Subproblem 1

n + 8 = 12.124355653 Simplifying n + 8 = 12.124355653 Reorder the terms: 8 + n = 12.124355653 Solving 8 + n = 12.124355653 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + n = 12.124355653 + -8 Combine like terms: 8 + -8 = 0 0 + n = 12.124355653 + -8 n = 12.124355653 + -8 Combine like terms: 12.124355653 + -8 = 4.124355653 n = 4.124355653 Simplifying n = 4.124355653

Subproblem 2

n + 8 = -12.124355653 Simplifying n + 8 = -12.124355653 Reorder the terms: 8 + n = -12.124355653 Solving 8 + n = -12.124355653 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + n = -12.124355653 + -8 Combine like terms: 8 + -8 = 0 0 + n = -12.124355653 + -8 n = -12.124355653 + -8 Combine like terms: -12.124355653 + -8 = -20.124355653 n = -20.124355653 Simplifying n = -20.124355653

Solution

The solution to the problem is based on the solutions from the subproblems. n = {4.124355653, -20.124355653}

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