n^2-6n-28=-5

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Solution for n^2-6n-28=-5 equation:


Simplifying
n2 + -6n + -28 = -5

Reorder the terms:
-28 + -6n + n2 = -5

Solving
-28 + -6n + n2 = -5

Solving for variable 'n'.

Reorder the terms:
-28 + 5 + -6n + n2 = -5 + 5

Combine like terms: -28 + 5 = -23
-23 + -6n + n2 = -5 + 5

Combine like terms: -5 + 5 = 0
-23 + -6n + n2 = 0

Begin completing the square.

Move the constant term to the right:

Add '23' to each side of the equation.
-23 + -6n + 23 + n2 = 0 + 23

Reorder the terms:
-23 + 23 + -6n + n2 = 0 + 23

Combine like terms: -23 + 23 = 0
0 + -6n + n2 = 0 + 23
-6n + n2 = 0 + 23

Combine like terms: 0 + 23 = 23
-6n + n2 = 23

The n term is -6n.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6n + 9 + n2 = 23 + 9

Reorder the terms:
9 + -6n + n2 = 23 + 9

Combine like terms: 23 + 9 = 32
9 + -6n + n2 = 32

Factor a perfect square on the left side:
(n + -3)(n + -3) = 32

Calculate the square root of the right side: 5.656854249

Break this problem into two subproblems by setting 
(n + -3) equal to 5.656854249 and -5.656854249.

Subproblem 1

n + -3 = 5.656854249 Simplifying n + -3 = 5.656854249 Reorder the terms: -3 + n = 5.656854249 Solving -3 + n = 5.656854249 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + n = 5.656854249 + 3 Combine like terms: -3 + 3 = 0 0 + n = 5.656854249 + 3 n = 5.656854249 + 3 Combine like terms: 5.656854249 + 3 = 8.656854249 n = 8.656854249 Simplifying n = 8.656854249

Subproblem 2

n + -3 = -5.656854249 Simplifying n + -3 = -5.656854249 Reorder the terms: -3 + n = -5.656854249 Solving -3 + n = -5.656854249 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + n = -5.656854249 + 3 Combine like terms: -3 + 3 = 0 0 + n = -5.656854249 + 3 n = -5.656854249 + 3 Combine like terms: -5.656854249 + 3 = -2.656854249 n = -2.656854249 Simplifying n = -2.656854249

Solution

The solution to the problem is based on the solutions from the subproblems. n = {8.656854249, -2.656854249}

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