2x^2+370x-217=0

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Solution for 2x^2+370x-217=0 equation:


Simplifying
2x2 + 370x + -217 = 0

Reorder the terms:
-217 + 370x + 2x2 = 0

Solving
-217 + 370x + 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'.
-108.5 + 185x + x2 = 0

Move the constant term to the right:

Add '108.5' to each side of the equation.
-108.5 + 185x + 108.5 + x2 = 0 + 108.5

Reorder the terms:
-108.5 + 108.5 + 185x + x2 = 0 + 108.5

Combine like terms: -108.5 + 108.5 = 0.0
0.0 + 185x + x2 = 0 + 108.5
185x + x2 = 0 + 108.5

Combine like terms: 0 + 108.5 = 108.5
185x + x2 = 108.5

The x term is 185x.  Take half its coefficient (92.5).
Square it (8556.25) and add it to both sides.

Add '8556.25' to each side of the equation.
185x + 8556.25 + x2 = 108.5 + 8556.25

Reorder the terms:
8556.25 + 185x + x2 = 108.5 + 8556.25

Combine like terms: 108.5 + 8556.25 = 8664.75
8556.25 + 185x + x2 = 8664.75

Factor a perfect square on the left side:
(x + 92.5)(x + 92.5) = 8664.75

Calculate the square root of the right side: 93.084638905

Break this problem into two subproblems by setting 
(x + 92.5) equal to 93.084638905 and -93.084638905.

Subproblem 1

x + 92.5 = 93.084638905 Simplifying x + 92.5 = 93.084638905 Reorder the terms: 92.5 + x = 93.084638905 Solving 92.5 + x = 93.084638905 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-92.5' to each side of the equation. 92.5 + -92.5 + x = 93.084638905 + -92.5 Combine like terms: 92.5 + -92.5 = 0.0 0.0 + x = 93.084638905 + -92.5 x = 93.084638905 + -92.5 Combine like terms: 93.084638905 + -92.5 = 0.584638905 x = 0.584638905 Simplifying x = 0.584638905

Subproblem 2

x + 92.5 = -93.084638905 Simplifying x + 92.5 = -93.084638905 Reorder the terms: 92.5 + x = -93.084638905 Solving 92.5 + x = -93.084638905 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-92.5' to each side of the equation. 92.5 + -92.5 + x = -93.084638905 + -92.5 Combine like terms: 92.5 + -92.5 = 0.0 0.0 + x = -93.084638905 + -92.5 x = -93.084638905 + -92.5 Combine like terms: -93.084638905 + -92.5 = -185.584638905 x = -185.584638905 Simplifying x = -185.584638905

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.584638905, -185.584638905}

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