2x^2+17x-185=0

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Solution for 2x^2+17x-185=0 equation:


Simplifying
2x2 + 17x + -185 = 0

Reorder the terms:
-185 + 17x + 2x2 = 0

Solving
-185 + 17x + 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'.
-92.5 + 8.5x + x2 = 0

Move the constant term to the right:

Add '92.5' to each side of the equation.
-92.5 + 8.5x + 92.5 + x2 = 0 + 92.5

Reorder the terms:
-92.5 + 92.5 + 8.5x + x2 = 0 + 92.5

Combine like terms: -92.5 + 92.5 = 0.0
0.0 + 8.5x + x2 = 0 + 92.5
8.5x + x2 = 0 + 92.5

Combine like terms: 0 + 92.5 = 92.5
8.5x + x2 = 92.5

The x term is 8.5x.  Take half its coefficient (4.25).
Square it (18.0625) and add it to both sides.

Add '18.0625' to each side of the equation.
8.5x + 18.0625 + x2 = 92.5 + 18.0625

Reorder the terms:
18.0625 + 8.5x + x2 = 92.5 + 18.0625

Combine like terms: 92.5 + 18.0625 = 110.5625
18.0625 + 8.5x + x2 = 110.5625

Factor a perfect square on the left side:
(x + 4.25)(x + 4.25) = 110.5625

Calculate the square root of the right side: 10.514870422

Break this problem into two subproblems by setting 
(x + 4.25) equal to 10.514870422 and -10.514870422.

Subproblem 1

x + 4.25 = 10.514870422 Simplifying x + 4.25 = 10.514870422 Reorder the terms: 4.25 + x = 10.514870422 Solving 4.25 + x = 10.514870422 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.25' to each side of the equation. 4.25 + -4.25 + x = 10.514870422 + -4.25 Combine like terms: 4.25 + -4.25 = 0.00 0.00 + x = 10.514870422 + -4.25 x = 10.514870422 + -4.25 Combine like terms: 10.514870422 + -4.25 = 6.264870422 x = 6.264870422 Simplifying x = 6.264870422

Subproblem 2

x + 4.25 = -10.514870422 Simplifying x + 4.25 = -10.514870422 Reorder the terms: 4.25 + x = -10.514870422 Solving 4.25 + x = -10.514870422 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.25' to each side of the equation. 4.25 + -4.25 + x = -10.514870422 + -4.25 Combine like terms: 4.25 + -4.25 = 0.00 0.00 + x = -10.514870422 + -4.25 x = -10.514870422 + -4.25 Combine like terms: -10.514870422 + -4.25 = -14.764870422 x = -14.764870422 Simplifying x = -14.764870422

Solution

The solution to the problem is based on the solutions from the subproblems. x = {6.264870422, -14.764870422}

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