x+380=x^2*3

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Solution for x+380=x^2*3 equation:


Simplifying
x + 380 = x2 * 3

Reorder the terms:
380 + x = x2 * 3

Reorder the terms for easier multiplication:
380 + x = 3x2

Solving
380 + x = 3x2

Solving for variable 'x'.

Combine like terms: 3x2 + -3x2 = 0
380 + x + -3x2 = 0

Begin completing the square.  Divide all terms by
-3 the coefficient of the squared term: 

Divide each side by '-3'.
-126.6666667 + -0.3333333333x + x2 = 0

Move the constant term to the right:

Add '126.6666667' to each side of the equation.
-126.6666667 + -0.3333333333x + 126.6666667 + x2 = 0 + 126.6666667

Reorder the terms:
-126.6666667 + 126.6666667 + -0.3333333333x + x2 = 0 + 126.6666667

Combine like terms: -126.6666667 + 126.6666667 = 0.0000000
0.0000000 + -0.3333333333x + x2 = 0 + 126.6666667
-0.3333333333x + x2 = 0 + 126.6666667

Combine like terms: 0 + 126.6666667 = 126.6666667
-0.3333333333x + x2 = 126.6666667

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-0.3333333333x + 0.25 + x2 = 126.6666667 + 0.25

Reorder the terms:
0.25 + -0.3333333333x + x2 = 126.6666667 + 0.25

Combine like terms: 126.6666667 + 0.25 = 126.9166667
0.25 + -0.3333333333x + x2 = 126.9166667

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 126.9166667

Calculate the square root of the right side: 11.265729746

Break this problem into two subproblems by setting 
(x + 0.5) equal to 11.265729746 and -11.265729746.

Subproblem 1

x + 0.5 = 11.265729746 Simplifying x + 0.5 = 11.265729746 Reorder the terms: 0.5 + x = 11.265729746 Solving 0.5 + x = 11.265729746 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 11.265729746 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 11.265729746 + -0.5 x = 11.265729746 + -0.5 Combine like terms: 11.265729746 + -0.5 = 10.765729746 x = 10.765729746 Simplifying x = 10.765729746

Subproblem 2

x + 0.5 = -11.265729746 Simplifying x + 0.5 = -11.265729746 Reorder the terms: 0.5 + x = -11.265729746 Solving 0.5 + x = -11.265729746 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -11.265729746 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -11.265729746 + -0.5 x = -11.265729746 + -0.5 Combine like terms: -11.265729746 + -0.5 = -11.765729746 x = -11.765729746 Simplifying x = -11.765729746

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.765729746, -11.765729746}

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