12x+x^2=130

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Solution for 12x+x^2=130 equation:


Simplifying
12x + x2 = 130

Solving
12x + x2 = 130

Solving for variable 'x'.

Reorder the terms:
-130 + 12x + x2 = 130 + -130

Combine like terms: 130 + -130 = 0
-130 + 12x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '130' to each side of the equation.
-130 + 12x + 130 + x2 = 0 + 130

Reorder the terms:
-130 + 130 + 12x + x2 = 0 + 130

Combine like terms: -130 + 130 = 0
0 + 12x + x2 = 0 + 130
12x + x2 = 0 + 130

Combine like terms: 0 + 130 = 130
12x + x2 = 130

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

Add '36' to each side of the equation.
12x + 36 + x2 = 130 + 36

Reorder the terms:
36 + 12x + x2 = 130 + 36

Combine like terms: 130 + 36 = 166
36 + 12x + x2 = 166

Factor a perfect square on the left side:
(x + 6)(x + 6) = 166

Calculate the square root of the right side: 12.884098727

Break this problem into two subproblems by setting 
(x + 6) equal to 12.884098727 and -12.884098727.

Subproblem 1

x + 6 = 12.884098727 Simplifying x + 6 = 12.884098727 Reorder the terms: 6 + x = 12.884098727 Solving 6 + x = 12.884098727 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = 12.884098727 + -6 Combine like terms: 6 + -6 = 0 0 + x = 12.884098727 + -6 x = 12.884098727 + -6 Combine like terms: 12.884098727 + -6 = 6.884098727 x = 6.884098727 Simplifying x = 6.884098727

Subproblem 2

x + 6 = -12.884098727 Simplifying x + 6 = -12.884098727 Reorder the terms: 6 + x = -12.884098727 Solving 6 + x = -12.884098727 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-6' to each side of the equation. 6 + -6 + x = -12.884098727 + -6 Combine like terms: 6 + -6 = 0 0 + x = -12.884098727 + -6 x = -12.884098727 + -6 Combine like terms: -12.884098727 + -6 = -18.884098727 x = -18.884098727 Simplifying x = -18.884098727

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.884098727, -18.884098727}

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