n^2+16n+36=0

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Solution for n^2+16n+36=0 equation:


Simplifying
n2 + 16n + 36 = 0

Reorder the terms:
36 + 16n + n2 = 0

Solving
36 + 16n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '-36' to each side of the equation.
36 + 16n + -36 + n2 = 0 + -36

Reorder the terms:
36 + -36 + 16n + n2 = 0 + -36

Combine like terms: 36 + -36 = 0
0 + 16n + n2 = 0 + -36
16n + n2 = 0 + -36

Combine like terms: 0 + -36 = -36
16n + n2 = -36

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 = -36 + 64

Reorder the terms:
64 + 16n + n2 = -36 + 64

Combine like terms: -36 + 64 = 28
64 + 16n + n2 = 28

Factor a perfect square on the left side:
(n + 8)(n + 8) = 28

Calculate the square root of the right side: 5.291502622

Break this problem into two subproblems by setting 
(n + 8) equal to 5.291502622 and -5.291502622.

Subproblem 1

n + 8 = 5.291502622 Simplifying n + 8 = 5.291502622 Reorder the terms: 8 + n = 5.291502622 Solving 8 + n = 5.291502622 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 = 5.291502622 + -8 Combine like terms: 8 + -8 = 0 0 + n = 5.291502622 + -8 n = 5.291502622 + -8 Combine like terms: 5.291502622 + -8 = -2.708497378 n = -2.708497378 Simplifying n = -2.708497378

Subproblem 2

n + 8 = -5.291502622 Simplifying n + 8 = -5.291502622 Reorder the terms: 8 + n = -5.291502622 Solving 8 + n = -5.291502622 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 = -5.291502622 + -8 Combine like terms: 8 + -8 = 0 0 + n = -5.291502622 + -8 n = -5.291502622 + -8 Combine like terms: -5.291502622 + -8 = -13.291502622 n = -13.291502622 Simplifying n = -13.291502622

Solution

The solution to the problem is based on the solutions from the subproblems. n = {-2.708497378, -13.291502622}

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