n^2+12n+36-8=0

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Solution for n^2+12n+36-8=0 equation:


Simplifying
n2 + 12n + 36 + -8 = 0

Reorder the terms:
36 + -8 + 12n + n2 = 0

Combine like terms: 36 + -8 = 28
28 + 12n + n2 = 0

Solving
28 + 12n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '-28' to each side of the equation.
28 + 12n + -28 + n2 = 0 + -28

Reorder the terms:
28 + -28 + 12n + n2 = 0 + -28

Combine like terms: 28 + -28 = 0
0 + 12n + n2 = 0 + -28
12n + n2 = 0 + -28

Combine like terms: 0 + -28 = -28
12n + n2 = -28

The n term is 12n.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12n + 36 + n2 = -28 + 36

Reorder the terms:
36 + 12n + n2 = -28 + 36

Combine like terms: -28 + 36 = 8
36 + 12n + n2 = 8

Factor a perfect square on the left side:
(n + 6)(n + 6) = 8

Calculate the square root of the right side: 2.828427125

Break this problem into two subproblems by setting 
(n + 6) equal to 2.828427125 and -2.828427125.

Subproblem 1

n + 6 = 2.828427125 Simplifying n + 6 = 2.828427125 Reorder the terms: 6 + n = 2.828427125 Solving 6 + n = 2.828427125 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + n = 2.828427125 + -6 Combine like terms: 6 + -6 = 0 0 + n = 2.828427125 + -6 n = 2.828427125 + -6 Combine like terms: 2.828427125 + -6 = -3.171572875 n = -3.171572875 Simplifying n = -3.171572875

Subproblem 2

n + 6 = -2.828427125 Simplifying n + 6 = -2.828427125 Reorder the terms: 6 + n = -2.828427125 Solving 6 + n = -2.828427125 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + n = -2.828427125 + -6 Combine like terms: 6 + -6 = 0 0 + n = -2.828427125 + -6 n = -2.828427125 + -6 Combine like terms: -2.828427125 + -6 = -8.828427125 n = -8.828427125 Simplifying n = -8.828427125

Solution

The solution to the problem is based on the solutions from the subproblems. n = {-3.171572875, -8.828427125}

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