x^2-(28+6x)=0

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Solution for x^2-(28+6x)=0 equation: 


Simplifying
x2 + -1(28 + 6x) = 0
x2 + (28 * -1 + 6x * -1) = 0
x2 + (-28 + -6x) = 0

Reorder the terms:
-28 + -6x + x2 = 0

Solving
-28 + -6x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '28' to each side of the equation.
-28 + -6x + 28 + x2 = 0 + 28

Reorder the terms:
-28 + 28 + -6x + x2 = 0 + 28

Combine like terms: -28 + 28 = 0
0 + -6x + x2 = 0 + 28
-6x + x2 = 0 + 28

Combine like terms: 0 + 28 = 28
-6x + x2 = 28

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

Add '9' to each side of the equation.
-6x + 9 + x2 = 28 + 9

Reorder the terms:
9 + -6x + x2 = 28 + 9

Combine like terms: 28 + 9 = 37
9 + -6x + x2 = 37

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

Calculate the square root of the right side: 6.08276253

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


Subproblem 1
x + -3 = 6.08276253

Simplifying
x + -3 = 6.08276253

Reorder the terms:
-3 + x = 6.08276253

Solving
-3 + x = 6.08276253

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '3' to each side of the equation.
-3 + 3 + x = 6.08276253 + 3

Combine like terms: -3 + 3 = 0
0 + x = 6.08276253 + 3
x = 6.08276253 + 3

Combine like terms: 6.08276253 + 3 = 9.08276253
x = 9.08276253

Simplifying
x = 9.08276253


Subproblem 2
x + -3 = -6.08276253

Simplifying
x + -3 = -6.08276253

Reorder the terms:
-3 + x = -6.08276253

Solving
-3 + x = -6.08276253

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '3' to each side of the equation.
-3 + 3 + x = -6.08276253 + 3

Combine like terms: -3 + 3 = 0
0 + x = -6.08276253 + 3
x = -6.08276253 + 3

Combine like terms: -6.08276253 + 3 = -3.08276253
x = -3.08276253

Simplifying
x = -3.08276253


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

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