2x^2+17x-360=0

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Solution for 2x^2+17x-360=0 equation:


Simplifying
2x2 + 17x + -360 = 0

Reorder the terms:
-360 + 17x + 2x2 = 0

Solving
-360 + 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'.
-180 + 8.5x + x2 = 0

Move the constant term to the right:

Add '180' to each side of the equation.
-180 + 8.5x + 180 + x2 = 0 + 180

Reorder the terms:
-180 + 180 + 8.5x + x2 = 0 + 180

Combine like terms: -180 + 180 = 0
0 + 8.5x + x2 = 0 + 180
8.5x + x2 = 0 + 180

Combine like terms: 0 + 180 = 180
8.5x + x2 = 180

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 = 180 + 18.0625

Reorder the terms:
18.0625 + 8.5x + x2 = 180 + 18.0625

Combine like terms: 180 + 18.0625 = 198.0625
18.0625 + 8.5x + x2 = 198.0625

Factor a perfect square on the left side:
(x + 4.25)(x + 4.25) = 198.0625

Calculate the square root of the right side: 14.073467945

Break this problem into two subproblems by setting 
(x + 4.25) equal to 14.073467945 and -14.073467945.

Subproblem 1

x + 4.25 = 14.073467945 Simplifying x + 4.25 = 14.073467945 Reorder the terms: 4.25 + x = 14.073467945 Solving 4.25 + x = 14.073467945 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 = 14.073467945 + -4.25 Combine like terms: 4.25 + -4.25 = 0.00 0.00 + x = 14.073467945 + -4.25 x = 14.073467945 + -4.25 Combine like terms: 14.073467945 + -4.25 = 9.823467945 x = 9.823467945 Simplifying x = 9.823467945

Subproblem 2

x + 4.25 = -14.073467945 Simplifying x + 4.25 = -14.073467945 Reorder the terms: 4.25 + x = -14.073467945 Solving 4.25 + x = -14.073467945 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 = -14.073467945 + -4.25 Combine like terms: 4.25 + -4.25 = 0.00 0.00 + x = -14.073467945 + -4.25 x = -14.073467945 + -4.25 Combine like terms: -14.073467945 + -4.25 = -18.323467945 x = -18.323467945 Simplifying x = -18.323467945

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.823467945, -18.323467945}

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