n^2+2n-2016=0

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Solution for n^2+2n-2016=0 equation:


Simplifying
n2 + 2n + -2016 = 0

Reorder the terms:
-2016 + 2n + n2 = 0

Solving
-2016 + 2n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '2016' to each side of the equation.
-2016 + 2n + 2016 + n2 = 0 + 2016

Reorder the terms:
-2016 + 2016 + 2n + n2 = 0 + 2016

Combine like terms: -2016 + 2016 = 0
0 + 2n + n2 = 0 + 2016
2n + n2 = 0 + 2016

Combine like terms: 0 + 2016 = 2016
2n + n2 = 2016

The n term is 2n.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2n + 1 + n2 = 2016 + 1

Reorder the terms:
1 + 2n + n2 = 2016 + 1

Combine like terms: 2016 + 1 = 2017
1 + 2n + n2 = 2017

Factor a perfect square on the left side:
(n + 1)(n + 1) = 2017

Calculate the square root of the right side: 44.911023146

Break this problem into two subproblems by setting 
(n + 1) equal to 44.911023146 and -44.911023146.

Subproblem 1

n + 1 = 44.911023146 Simplifying n + 1 = 44.911023146 Reorder the terms: 1 + n = 44.911023146 Solving 1 + n = 44.911023146 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + n = 44.911023146 + -1 Combine like terms: 1 + -1 = 0 0 + n = 44.911023146 + -1 n = 44.911023146 + -1 Combine like terms: 44.911023146 + -1 = 43.911023146 n = 43.911023146 Simplifying n = 43.911023146

Subproblem 2

n + 1 = -44.911023146 Simplifying n + 1 = -44.911023146 Reorder the terms: 1 + n = -44.911023146 Solving 1 + n = -44.911023146 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + n = -44.911023146 + -1 Combine like terms: 1 + -1 = 0 0 + n = -44.911023146 + -1 n = -44.911023146 + -1 Combine like terms: -44.911023146 + -1 = -45.911023146 n = -45.911023146 Simplifying n = -45.911023146

Solution

The solution to the problem is based on the solutions from the subproblems. n = {43.911023146, -45.911023146}

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