n^2+8n-14=0

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Solution for n^2+8n-14=0 equation:


Simplifying
n2 + 8n + -14 = 0

Reorder the terms:
-14 + 8n + n2 = 0

Solving
-14 + 8n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '14' to each side of the equation.
-14 + 8n + 14 + n2 = 0 + 14

Reorder the terms:
-14 + 14 + 8n + n2 = 0 + 14

Combine like terms: -14 + 14 = 0
0 + 8n + n2 = 0 + 14
8n + n2 = 0 + 14

Combine like terms: 0 + 14 = 14
8n + n2 = 14

The n term is 8n.  Take half its coefficient (4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
8n + 16 + n2 = 14 + 16

Reorder the terms:
16 + 8n + n2 = 14 + 16

Combine like terms: 14 + 16 = 30
16 + 8n + n2 = 30

Factor a perfect square on the left side:
(n + 4)(n + 4) = 30

Calculate the square root of the right side: 5.477225575

Break this problem into two subproblems by setting 
(n + 4) equal to 5.477225575 and -5.477225575.

Subproblem 1

n + 4 = 5.477225575 Simplifying n + 4 = 5.477225575 Reorder the terms: 4 + n = 5.477225575 Solving 4 + n = 5.477225575 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + n = 5.477225575 + -4 Combine like terms: 4 + -4 = 0 0 + n = 5.477225575 + -4 n = 5.477225575 + -4 Combine like terms: 5.477225575 + -4 = 1.477225575 n = 1.477225575 Simplifying n = 1.477225575

Subproblem 2

n + 4 = -5.477225575 Simplifying n + 4 = -5.477225575 Reorder the terms: 4 + n = -5.477225575 Solving 4 + n = -5.477225575 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + n = -5.477225575 + -4 Combine like terms: 4 + -4 = 0 0 + n = -5.477225575 + -4 n = -5.477225575 + -4 Combine like terms: -5.477225575 + -4 = -9.477225575 n = -9.477225575 Simplifying n = -9.477225575

Solution

The solution to the problem is based on the solutions from the subproblems. n = {1.477225575, -9.477225575}

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