n^2-16n+2=-4

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Solution for n^2-16n+2=-4 equation:


Simplifying
n2 + -16n + 2 = -4

Reorder the terms:
2 + -16n + n2 = -4

Solving
2 + -16n + n2 = -4

Solving for variable 'n'.

Reorder the terms:
2 + 4 + -16n + n2 = -4 + 4

Combine like terms: 2 + 4 = 6
6 + -16n + n2 = -4 + 4

Combine like terms: -4 + 4 = 0
6 + -16n + n2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-6' to each side of the equation.
6 + -16n + -6 + n2 = 0 + -6

Reorder the terms:
6 + -6 + -16n + n2 = 0 + -6

Combine like terms: 6 + -6 = 0
0 + -16n + n2 = 0 + -6
-16n + n2 = 0 + -6

Combine like terms: 0 + -6 = -6
-16n + n2 = -6

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 = -6 + 64

Reorder the terms:
64 + -16n + n2 = -6 + 64

Combine like terms: -6 + 64 = 58
64 + -16n + n2 = 58

Factor a perfect square on the left side:
(n + -8)(n + -8) = 58

Calculate the square root of the right side: 7.615773106

Break this problem into two subproblems by setting 
(n + -8) equal to 7.615773106 and -7.615773106.

Subproblem 1

n + -8 = 7.615773106 Simplifying n + -8 = 7.615773106 Reorder the terms: -8 + n = 7.615773106 Solving -8 + n = 7.615773106 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 = 7.615773106 + 8 Combine like terms: -8 + 8 = 0 0 + n = 7.615773106 + 8 n = 7.615773106 + 8 Combine like terms: 7.615773106 + 8 = 15.615773106 n = 15.615773106 Simplifying n = 15.615773106

Subproblem 2

n + -8 = -7.615773106 Simplifying n + -8 = -7.615773106 Reorder the terms: -8 + n = -7.615773106 Solving -8 + n = -7.615773106 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 = -7.615773106 + 8 Combine like terms: -8 + 8 = 0 0 + n = -7.615773106 + 8 n = -7.615773106 + 8 Combine like terms: -7.615773106 + 8 = 0.384226894 n = 0.384226894 Simplifying n = 0.384226894

Solution

The solution to the problem is based on the solutions from the subproblems. n = {15.615773106, 0.384226894}

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