n^2+n-1378=0

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Solution for n^2+n-1378=0 equation:


Simplifying
n2 + n + -1378 = 0

Reorder the terms:
-1378 + n + n2 = 0

Solving
-1378 + n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '1378' to each side of the equation.
-1378 + n + 1378 + n2 = 0 + 1378

Reorder the terms:
-1378 + 1378 + n + n2 = 0 + 1378

Combine like terms: -1378 + 1378 = 0
0 + n + n2 = 0 + 1378
n + n2 = 0 + 1378

Combine like terms: 0 + 1378 = 1378
n + n2 = 1378

The n term is n.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
n + 0.25 + n2 = 1378 + 0.25

Reorder the terms:
0.25 + n + n2 = 1378 + 0.25

Combine like terms: 1378 + 0.25 = 1378.25
0.25 + n + n2 = 1378.25

Factor a perfect square on the left side:
(n + 0.5)(n + 0.5) = 1378.25

Calculate the square root of the right side: 37.124789562

Break this problem into two subproblems by setting 
(n + 0.5) equal to 37.124789562 and -37.124789562.

Subproblem 1

n + 0.5 = 37.124789562 Simplifying n + 0.5 = 37.124789562 Reorder the terms: 0.5 + n = 37.124789562 Solving 0.5 + n = 37.124789562 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + n = 37.124789562 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + n = 37.124789562 + -0.5 n = 37.124789562 + -0.5 Combine like terms: 37.124789562 + -0.5 = 36.624789562 n = 36.624789562 Simplifying n = 36.624789562

Subproblem 2

n + 0.5 = -37.124789562 Simplifying n + 0.5 = -37.124789562 Reorder the terms: 0.5 + n = -37.124789562 Solving 0.5 + n = -37.124789562 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + n = -37.124789562 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + n = -37.124789562 + -0.5 n = -37.124789562 + -0.5 Combine like terms: -37.124789562 + -0.5 = -37.624789562 n = -37.624789562 Simplifying n = -37.624789562

Solution

The solution to the problem is based on the solutions from the subproblems. n = {36.624789562, -37.624789562}

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