n^2+18n+50=0

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Solution for n^2+18n+50=0 equation:


Simplifying
n2 + 18n + 50 = 0

Reorder the terms:
50 + 18n + n2 = 0

Solving
50 + 18n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '-50' to each side of the equation.
50 + 18n + -50 + n2 = 0 + -50

Reorder the terms:
50 + -50 + 18n + n2 = 0 + -50

Combine like terms: 50 + -50 = 0
0 + 18n + n2 = 0 + -50
18n + n2 = 0 + -50

Combine like terms: 0 + -50 = -50
18n + n2 = -50

The n term is 18n.  Take half its coefficient (9).
Square it (81) and add it to both sides.

Add '81' to each side of the equation.
18n + 81 + n2 = -50 + 81

Reorder the terms:
81 + 18n + n2 = -50 + 81

Combine like terms: -50 + 81 = 31
81 + 18n + n2 = 31

Factor a perfect square on the left side:
(n + 9)(n + 9) = 31

Calculate the square root of the right side: 5.567764363

Break this problem into two subproblems by setting 
(n + 9) equal to 5.567764363 and -5.567764363.

Subproblem 1

n + 9 = 5.567764363 Simplifying n + 9 = 5.567764363 Reorder the terms: 9 + n = 5.567764363 Solving 9 + n = 5.567764363 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + n = 5.567764363 + -9 Combine like terms: 9 + -9 = 0 0 + n = 5.567764363 + -9 n = 5.567764363 + -9 Combine like terms: 5.567764363 + -9 = -3.432235637 n = -3.432235637 Simplifying n = -3.432235637

Subproblem 2

n + 9 = -5.567764363 Simplifying n + 9 = -5.567764363 Reorder the terms: 9 + n = -5.567764363 Solving 9 + n = -5.567764363 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-9' to each side of the equation. 9 + -9 + n = -5.567764363 + -9 Combine like terms: 9 + -9 = 0 0 + n = -5.567764363 + -9 n = -5.567764363 + -9 Combine like terms: -5.567764363 + -9 = -14.567764363 n = -14.567764363 Simplifying n = -14.567764363

Solution

The solution to the problem is based on the solutions from the subproblems. n = {-3.432235637, -14.567764363}

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