n^2-n-38=0

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Solution for n^2-n-38=0 equation:


Simplifying
n2 + -1n + -38 = 0

Reorder the terms:
-38 + -1n + n2 = 0

Solving
-38 + -1n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '38' to each side of the equation.
-38 + -1n + 38 + n2 = 0 + 38

Reorder the terms:
-38 + 38 + -1n + n2 = 0 + 38

Combine like terms: -38 + 38 = 0
0 + -1n + n2 = 0 + 38
-1n + n2 = 0 + 38

Combine like terms: 0 + 38 = 38
-1n + n2 = 38

The n term is -1n.  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.
-1n + 0.25 + n2 = 38 + 0.25

Reorder the terms:
0.25 + -1n + n2 = 38 + 0.25

Combine like terms: 38 + 0.25 = 38.25
0.25 + -1n + n2 = 38.25

Factor a perfect square on the left side:
(n + -0.5)(n + -0.5) = 38.25

Calculate the square root of the right side: 6.184658438

Break this problem into two subproblems by setting 
(n + -0.5) equal to 6.184658438 and -6.184658438.

Subproblem 1

n + -0.5 = 6.184658438 Simplifying n + -0.5 = 6.184658438 Reorder the terms: -0.5 + n = 6.184658438 Solving -0.5 + n = 6.184658438 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 = 6.184658438 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + n = 6.184658438 + 0.5 n = 6.184658438 + 0.5 Combine like terms: 6.184658438 + 0.5 = 6.684658438 n = 6.684658438 Simplifying n = 6.684658438

Subproblem 2

n + -0.5 = -6.184658438 Simplifying n + -0.5 = -6.184658438 Reorder the terms: -0.5 + n = -6.184658438 Solving -0.5 + n = -6.184658438 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 = -6.184658438 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + n = -6.184658438 + 0.5 n = -6.184658438 + 0.5 Combine like terms: -6.184658438 + 0.5 = -5.684658438 n = -5.684658438 Simplifying n = -5.684658438

Solution

The solution to the problem is based on the solutions from the subproblems. n = {6.684658438, -5.684658438}

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