n^2+18n-34=0

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Solution for n^2+18n-34=0 equation:


Simplifying
n2 + 18n + -34 = 0

Reorder the terms:
-34 + 18n + n2 = 0

Solving
-34 + 18n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '34' to each side of the equation.
-34 + 18n + 34 + n2 = 0 + 34

Reorder the terms:
-34 + 34 + 18n + n2 = 0 + 34

Combine like terms: -34 + 34 = 0
0 + 18n + n2 = 0 + 34
18n + n2 = 0 + 34

Combine like terms: 0 + 34 = 34
18n + n2 = 34

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 = 34 + 81

Reorder the terms:
81 + 18n + n2 = 34 + 81

Combine like terms: 34 + 81 = 115
81 + 18n + n2 = 115

Factor a perfect square on the left side:
(n + 9)(n + 9) = 115

Calculate the square root of the right side: 10.723805295

Break this problem into two subproblems by setting 
(n + 9) equal to 10.723805295 and -10.723805295.

Subproblem 1

n + 9 = 10.723805295 Simplifying n + 9 = 10.723805295 Reorder the terms: 9 + n = 10.723805295 Solving 9 + n = 10.723805295 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 = 10.723805295 + -9 Combine like terms: 9 + -9 = 0 0 + n = 10.723805295 + -9 n = 10.723805295 + -9 Combine like terms: 10.723805295 + -9 = 1.723805295 n = 1.723805295 Simplifying n = 1.723805295

Subproblem 2

n + 9 = -10.723805295 Simplifying n + 9 = -10.723805295 Reorder the terms: 9 + n = -10.723805295 Solving 9 + n = -10.723805295 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 = -10.723805295 + -9 Combine like terms: 9 + -9 = 0 0 + n = -10.723805295 + -9 n = -10.723805295 + -9 Combine like terms: -10.723805295 + -9 = -19.723805295 n = -19.723805295 Simplifying n = -19.723805295

Solution

The solution to the problem is based on the solutions from the subproblems. n = {1.723805295, -19.723805295}

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