x^2+191x-3845.75=0

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Solution for x^2+191x-3845.75=0 equation:


Simplifying
x2 + 191x + -3845.75 = 0

Reorder the terms:
-3845.75 + 191x + x2 = 0

Solving
-3845.75 + 191x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '3845.75' to each side of the equation.
-3845.75 + 191x + 3845.75 + x2 = 0 + 3845.75

Reorder the terms:
-3845.75 + 3845.75 + 191x + x2 = 0 + 3845.75

Combine like terms: -3845.75 + 3845.75 = 0.00
0.00 + 191x + x2 = 0 + 3845.75
191x + x2 = 0 + 3845.75

Combine like terms: 0 + 3845.75 = 3845.75
191x + x2 = 3845.75

The x term is 191x.  Take half its coefficient (95.5).
Square it (9120.25) and add it to both sides.

Add '9120.25' to each side of the equation.
191x + 9120.25 + x2 = 3845.75 + 9120.25

Reorder the terms:
9120.25 + 191x + x2 = 3845.75 + 9120.25

Combine like terms: 3845.75 + 9120.25 = 12966
9120.25 + 191x + x2 = 12966

Factor a perfect square on the left side:
(x + 95.5)(x + 95.5) = 12966

Calculate the square root of the right side: 113.868345031

Break this problem into two subproblems by setting 
(x + 95.5) equal to 113.868345031 and -113.868345031.

Subproblem 1

x + 95.5 = 113.868345031 Simplifying x + 95.5 = 113.868345031 Reorder the terms: 95.5 + x = 113.868345031 Solving 95.5 + x = 113.868345031 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-95.5' to each side of the equation. 95.5 + -95.5 + x = 113.868345031 + -95.5 Combine like terms: 95.5 + -95.5 = 0.0 0.0 + x = 113.868345031 + -95.5 x = 113.868345031 + -95.5 Combine like terms: 113.868345031 + -95.5 = 18.368345031 x = 18.368345031 Simplifying x = 18.368345031

Subproblem 2

x + 95.5 = -113.868345031 Simplifying x + 95.5 = -113.868345031 Reorder the terms: 95.5 + x = -113.868345031 Solving 95.5 + x = -113.868345031 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-95.5' to each side of the equation. 95.5 + -95.5 + x = -113.868345031 + -95.5 Combine like terms: 95.5 + -95.5 = 0.0 0.0 + x = -113.868345031 + -95.5 x = -113.868345031 + -95.5 Combine like terms: -113.868345031 + -95.5 = -209.368345031 x = -209.368345031 Simplifying x = -209.368345031

Solution

The solution to the problem is based on the solutions from the subproblems. x = {18.368345031, -209.368345031}

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