n^2-6n=28

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


Simplifying
n2 + -6n = 28

Reorder the terms:
-6n + n2 = 28

Solving
-6n + n2 = 28

Solving for variable 'n'.

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

Combine like terms: 28 + -28 = 0
-28 + -6n + n2 = 0

Begin completing the square.

Move the constant term to the right:

Add '28' to each side of the equation.
-28 + -6n + 28 + n2 = 0 + 28

Reorder the terms:
-28 + 28 + -6n + n2 = 0 + 28

Combine like terms: -28 + 28 = 0
0 + -6n + n2 = 0 + 28
-6n + n2 = 0 + 28

Combine like terms: 0 + 28 = 28
-6n + n2 = 28

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 = 28 + 9

Reorder the terms:
9 + -6n + n2 = 28 + 9

Combine like terms: 28 + 9 = 37
9 + -6n + n2 = 37

Factor a perfect square on the left side:
(n + -3)(n + -3) = 37

Calculate the square root of the right side: 6.08276253

Break this problem into two subproblems by setting 
(n + -3) equal to 6.08276253 and -6.08276253.

Subproblem 1

n + -3 = 6.08276253 Simplifying n + -3 = 6.08276253 Reorder the terms: -3 + n = 6.08276253 Solving -3 + n = 6.08276253 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 = 6.08276253 + 3 Combine like terms: -3 + 3 = 0 0 + n = 6.08276253 + 3 n = 6.08276253 + 3 Combine like terms: 6.08276253 + 3 = 9.08276253 n = 9.08276253 Simplifying n = 9.08276253

Subproblem 2

n + -3 = -6.08276253 Simplifying n + -3 = -6.08276253 Reorder the terms: -3 + n = -6.08276253 Solving -3 + n = -6.08276253 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 = -6.08276253 + 3 Combine like terms: -3 + 3 = 0 0 + n = -6.08276253 + 3 n = -6.08276253 + 3 Combine like terms: -6.08276253 + 3 = -3.08276253 n = -3.08276253 Simplifying n = -3.08276253

Solution

The solution to the problem is based on the solutions from the subproblems. n = {9.08276253, -3.08276253}

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