n^2-12n-16=0

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Solution for n^2-12n-16=0 equation:


Simplifying
n2 + -12n + -16 = 0

Reorder the terms:
-16 + -12n + n2 = 0

Solving
-16 + -12n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '16' to each side of the equation.
-16 + -12n + 16 + n2 = 0 + 16

Reorder the terms:
-16 + 16 + -12n + n2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + -12n + n2 = 0 + 16
-12n + n2 = 0 + 16

Combine like terms: 0 + 16 = 16
-12n + n2 = 16

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 = 16 + 36

Reorder the terms:
36 + -12n + n2 = 16 + 36

Combine like terms: 16 + 36 = 52
36 + -12n + n2 = 52

Factor a perfect square on the left side:
(n + -6)(n + -6) = 52

Calculate the square root of the right side: 7.211102551

Break this problem into two subproblems by setting 
(n + -6) equal to 7.211102551 and -7.211102551.

Subproblem 1

n + -6 = 7.211102551 Simplifying n + -6 = 7.211102551 Reorder the terms: -6 + n = 7.211102551 Solving -6 + n = 7.211102551 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 = 7.211102551 + 6 Combine like terms: -6 + 6 = 0 0 + n = 7.211102551 + 6 n = 7.211102551 + 6 Combine like terms: 7.211102551 + 6 = 13.211102551 n = 13.211102551 Simplifying n = 13.211102551

Subproblem 2

n + -6 = -7.211102551 Simplifying n + -6 = -7.211102551 Reorder the terms: -6 + n = -7.211102551 Solving -6 + n = -7.211102551 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 = -7.211102551 + 6 Combine like terms: -6 + 6 = 0 0 + n = -7.211102551 + 6 n = -7.211102551 + 6 Combine like terms: -7.211102551 + 6 = -1.211102551 n = -1.211102551 Simplifying n = -1.211102551

Solution

The solution to the problem is based on the solutions from the subproblems. n = {13.211102551, -1.211102551}

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