(x^2+3x-187)=0

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Solution for (x^2+3x-187)=0 equation:


Simplifying
(x2 + 3x + -187) = 0

Reorder the terms:
(-187 + 3x + x2) = 0

Remove parenthesis around (-187 + 3x + x2)
-187 + 3x + x2 = 0

Solving
-187 + 3x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '187' to each side of the equation.
-187 + 3x + 187 + x2 = 0 + 187

Reorder the terms:
-187 + 187 + 3x + x2 = 0 + 187

Combine like terms: -187 + 187 = 0
0 + 3x + x2 = 0 + 187
3x + x2 = 0 + 187

Combine like terms: 0 + 187 = 187
3x + x2 = 187

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = 187 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 187 + 2.25

Combine like terms: 187 + 2.25 = 189.25
2.25 + 3x + x2 = 189.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 189.25

Calculate the square root of the right side: 13.756816492

Break this problem into two subproblems by setting 
(x + 1.5) equal to 13.756816492 and -13.756816492.

Subproblem 1

x + 1.5 = 13.756816492 Simplifying x + 1.5 = 13.756816492 Reorder the terms: 1.5 + x = 13.756816492 Solving 1.5 + x = 13.756816492 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 13.756816492 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 13.756816492 + -1.5 x = 13.756816492 + -1.5 Combine like terms: 13.756816492 + -1.5 = 12.256816492 x = 12.256816492 Simplifying x = 12.256816492

Subproblem 2

x + 1.5 = -13.756816492 Simplifying x + 1.5 = -13.756816492 Reorder the terms: 1.5 + x = -13.756816492 Solving 1.5 + x = -13.756816492 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -13.756816492 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -13.756816492 + -1.5 x = -13.756816492 + -1.5 Combine like terms: -13.756816492 + -1.5 = -15.256816492 x = -15.256816492 Simplifying x = -15.256816492

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.256816492, -15.256816492}

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