n^2-12n-35=4

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Solution for n^2-12n-35=4 equation:


Simplifying
n2 + -12n + -35 = 4

Reorder the terms:
-35 + -12n + n2 = 4

Solving
-35 + -12n + n2 = 4

Solving for variable 'n'.

Reorder the terms:
-35 + -4 + -12n + n2 = 4 + -4

Combine like terms: -35 + -4 = -39
-39 + -12n + n2 = 4 + -4

Combine like terms: 4 + -4 = 0
-39 + -12n + n2 = 0

Begin completing the square.

Move the constant term to the right:

Add '39' to each side of the equation.
-39 + -12n + 39 + n2 = 0 + 39

Reorder the terms:
-39 + 39 + -12n + n2 = 0 + 39

Combine like terms: -39 + 39 = 0
0 + -12n + n2 = 0 + 39
-12n + n2 = 0 + 39

Combine like terms: 0 + 39 = 39
-12n + n2 = 39

The n term is -12n.  Take half its coefficient (-6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
-12n + 36 + n2 = 39 + 36

Reorder the terms:
36 + -12n + n2 = 39 + 36

Combine like terms: 39 + 36 = 75
36 + -12n + n2 = 75

Factor a perfect square on the left side:
(n + -6)(n + -6) = 75

Calculate the square root of the right side: 8.660254038

Break this problem into two subproblems by setting 
(n + -6) equal to 8.660254038 and -8.660254038.

Subproblem 1

n + -6 = 8.660254038 Simplifying n + -6 = 8.660254038 Reorder the terms: -6 + n = 8.660254038 Solving -6 + n = 8.660254038 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + n = 8.660254038 + 6 Combine like terms: -6 + 6 = 0 0 + n = 8.660254038 + 6 n = 8.660254038 + 6 Combine like terms: 8.660254038 + 6 = 14.660254038 n = 14.660254038 Simplifying n = 14.660254038

Subproblem 2

n + -6 = -8.660254038 Simplifying n + -6 = -8.660254038 Reorder the terms: -6 + n = -8.660254038 Solving -6 + n = -8.660254038 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + n = -8.660254038 + 6 Combine like terms: -6 + 6 = 0 0 + n = -8.660254038 + 6 n = -8.660254038 + 6 Combine like terms: -8.660254038 + 6 = -2.660254038 n = -2.660254038 Simplifying n = -2.660254038

Solution

The solution to the problem is based on the solutions from the subproblems. n = {14.660254038, -2.660254038}

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