x^2=12-123x

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Solution for x^2=12-123x equation:


Simplifying
x2 = 12 + -123x

Solving
x2 = 12 + -123x

Solving for variable 'x'.

Reorder the terms:
-12 + 123x + x2 = 12 + -123x + -12 + 123x

Reorder the terms:
-12 + 123x + x2 = 12 + -12 + -123x + 123x

Combine like terms: 12 + -12 = 0
-12 + 123x + x2 = 0 + -123x + 123x
-12 + 123x + x2 = -123x + 123x

Combine like terms: -123x + 123x = 0
-12 + 123x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + 123x + 12 + x2 = 0 + 12

Reorder the terms:
-12 + 12 + 123x + x2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + 123x + x2 = 0 + 12
123x + x2 = 0 + 12

Combine like terms: 0 + 12 = 12
123x + x2 = 12

The x term is 123x.  Take half its coefficient (61.5).
Square it (3782.25) and add it to both sides.

Add '3782.25' to each side of the equation.
123x + 3782.25 + x2 = 12 + 3782.25

Reorder the terms:
3782.25 + 123x + x2 = 12 + 3782.25

Combine like terms: 12 + 3782.25 = 3794.25
3782.25 + 123x + x2 = 3794.25

Factor a perfect square on the left side:
(x + 61.5)(x + 61.5) = 3794.25

Calculate the square root of the right side: 61.597483715

Break this problem into two subproblems by setting 
(x + 61.5) equal to 61.597483715 and -61.597483715.

Subproblem 1

x + 61.5 = 61.597483715 Simplifying x + 61.5 = 61.597483715 Reorder the terms: 61.5 + x = 61.597483715 Solving 61.5 + x = 61.597483715 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-61.5' to each side of the equation. 61.5 + -61.5 + x = 61.597483715 + -61.5 Combine like terms: 61.5 + -61.5 = 0.0 0.0 + x = 61.597483715 + -61.5 x = 61.597483715 + -61.5 Combine like terms: 61.597483715 + -61.5 = 0.097483715 x = 0.097483715 Simplifying x = 0.097483715

Subproblem 2

x + 61.5 = -61.597483715 Simplifying x + 61.5 = -61.597483715 Reorder the terms: 61.5 + x = -61.597483715 Solving 61.5 + x = -61.597483715 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-61.5' to each side of the equation. 61.5 + -61.5 + x = -61.597483715 + -61.5 Combine like terms: 61.5 + -61.5 = 0.0 0.0 + x = -61.597483715 + -61.5 x = -61.597483715 + -61.5 Combine like terms: -61.597483715 + -61.5 = -123.097483715 x = -123.097483715 Simplifying x = -123.097483715

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.097483715, -123.097483715}

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