n^2-14n-73=4

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Solution for n^2-14n-73=4 equation:


Simplifying
n2 + -14n + -73 = 4

Reorder the terms:
-73 + -14n + n2 = 4

Solving
-73 + -14n + n2 = 4

Solving for variable 'n'.

Reorder the terms:
-73 + -4 + -14n + n2 = 4 + -4

Combine like terms: -73 + -4 = -77
-77 + -14n + n2 = 4 + -4

Combine like terms: 4 + -4 = 0
-77 + -14n + n2 = 0

Begin completing the square.

Move the constant term to the right:

Add '77' to each side of the equation.
-77 + -14n + 77 + n2 = 0 + 77

Reorder the terms:
-77 + 77 + -14n + n2 = 0 + 77

Combine like terms: -77 + 77 = 0
0 + -14n + n2 = 0 + 77
-14n + n2 = 0 + 77

Combine like terms: 0 + 77 = 77
-14n + n2 = 77

The n term is -14n.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14n + 49 + n2 = 77 + 49

Reorder the terms:
49 + -14n + n2 = 77 + 49

Combine like terms: 77 + 49 = 126
49 + -14n + n2 = 126

Factor a perfect square on the left side:
(n + -7)(n + -7) = 126

Calculate the square root of the right side: 11.22497216

Break this problem into two subproblems by setting 
(n + -7) equal to 11.22497216 and -11.22497216.

Subproblem 1

n + -7 = 11.22497216 Simplifying n + -7 = 11.22497216 Reorder the terms: -7 + n = 11.22497216 Solving -7 + n = 11.22497216 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + n = 11.22497216 + 7 Combine like terms: -7 + 7 = 0 0 + n = 11.22497216 + 7 n = 11.22497216 + 7 Combine like terms: 11.22497216 + 7 = 18.22497216 n = 18.22497216 Simplifying n = 18.22497216

Subproblem 2

n + -7 = -11.22497216 Simplifying n + -7 = -11.22497216 Reorder the terms: -7 + n = -11.22497216 Solving -7 + n = -11.22497216 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + n = -11.22497216 + 7 Combine like terms: -7 + 7 = 0 0 + n = -11.22497216 + 7 n = -11.22497216 + 7 Combine like terms: -11.22497216 + 7 = -4.22497216 n = -4.22497216 Simplifying n = -4.22497216

Solution

The solution to the problem is based on the solutions from the subproblems. n = {18.22497216, -4.22497216}

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