n^2-n-49=0

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Solution for n^2-n-49=0 equation:


Simplifying
n2 + -1n + -49 = 0

Reorder the terms:
-49 + -1n + n2 = 0

Solving
-49 + -1n + n2 = 0

Solving for variable 'n'.

Begin completing the square.

Move the constant term to the right:

Add '49' to each side of the equation.
-49 + -1n + 49 + n2 = 0 + 49

Reorder the terms:
-49 + 49 + -1n + n2 = 0 + 49

Combine like terms: -49 + 49 = 0
0 + -1n + n2 = 0 + 49
-1n + n2 = 0 + 49

Combine like terms: 0 + 49 = 49
-1n + n2 = 49

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 = 49 + 0.25

Reorder the terms:
0.25 + -1n + n2 = 49 + 0.25

Combine like terms: 49 + 0.25 = 49.25
0.25 + -1n + n2 = 49.25

Factor a perfect square on the left side:
(n + -0.5)(n + -0.5) = 49.25

Calculate the square root of the right side: 7.017834424

Break this problem into two subproblems by setting 
(n + -0.5) equal to 7.017834424 and -7.017834424.

Subproblem 1

n + -0.5 = 7.017834424 Simplifying n + -0.5 = 7.017834424 Reorder the terms: -0.5 + n = 7.017834424 Solving -0.5 + n = 7.017834424 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 = 7.017834424 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + n = 7.017834424 + 0.5 n = 7.017834424 + 0.5 Combine like terms: 7.017834424 + 0.5 = 7.517834424 n = 7.517834424 Simplifying n = 7.517834424

Subproblem 2

n + -0.5 = -7.017834424 Simplifying n + -0.5 = -7.017834424 Reorder the terms: -0.5 + n = -7.017834424 Solving -0.5 + n = -7.017834424 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 = -7.017834424 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + n = -7.017834424 + 0.5 n = -7.017834424 + 0.5 Combine like terms: -7.017834424 + 0.5 = -6.517834424 n = -6.517834424 Simplifying n = -6.517834424

Solution

The solution to the problem is based on the solutions from the subproblems. n = {7.517834424, -6.517834424}

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