2x^2+55x+150=0

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Solution for 2x^2+55x+150=0 equation:


Simplifying
2x2 + 55x + 150 = 0

Reorder the terms:
150 + 55x + 2x2 = 0

Solving
150 + 55x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
75 + 27.5x + x2 = 0

Move the constant term to the right:

Add '-75' to each side of the equation.
75 + 27.5x + -75 + x2 = 0 + -75

Reorder the terms:
75 + -75 + 27.5x + x2 = 0 + -75

Combine like terms: 75 + -75 = 0
0 + 27.5x + x2 = 0 + -75
27.5x + x2 = 0 + -75

Combine like terms: 0 + -75 = -75
27.5x + x2 = -75

The x term is 27.5x.  Take half its coefficient (13.75).
Square it (189.0625) and add it to both sides.

Add '189.0625' to each side of the equation.
27.5x + 189.0625 + x2 = -75 + 189.0625

Reorder the terms:
189.0625 + 27.5x + x2 = -75 + 189.0625

Combine like terms: -75 + 189.0625 = 114.0625
189.0625 + 27.5x + x2 = 114.0625

Factor a perfect square on the left side:
(x + 13.75)(x + 13.75) = 114.0625

Calculate the square root of the right side: 10.680004682

Break this problem into two subproblems by setting 
(x + 13.75) equal to 10.680004682 and -10.680004682.

Subproblem 1

x + 13.75 = 10.680004682 Simplifying x + 13.75 = 10.680004682 Reorder the terms: 13.75 + x = 10.680004682 Solving 13.75 + x = 10.680004682 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13.75' to each side of the equation. 13.75 + -13.75 + x = 10.680004682 + -13.75 Combine like terms: 13.75 + -13.75 = 0.00 0.00 + x = 10.680004682 + -13.75 x = 10.680004682 + -13.75 Combine like terms: 10.680004682 + -13.75 = -3.069995318 x = -3.069995318 Simplifying x = -3.069995318

Subproblem 2

x + 13.75 = -10.680004682 Simplifying x + 13.75 = -10.680004682 Reorder the terms: 13.75 + x = -10.680004682 Solving 13.75 + x = -10.680004682 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-13.75' to each side of the equation. 13.75 + -13.75 + x = -10.680004682 + -13.75 Combine like terms: 13.75 + -13.75 = 0.00 0.00 + x = -10.680004682 + -13.75 x = -10.680004682 + -13.75 Combine like terms: -10.680004682 + -13.75 = -24.430004682 x = -24.430004682 Simplifying x = -24.430004682

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-3.069995318, -24.430004682}

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