2x^2+35x-117=0

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Solution for 2x^2+35x-117=0 equation:


Simplifying
2x2 + 35x + -117 = 0

Reorder the terms:
-117 + 35x + 2x2 = 0

Solving
-117 + 35x + 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'.
-58.5 + 17.5x + x2 = 0

Move the constant term to the right:

Add '58.5' to each side of the equation.
-58.5 + 17.5x + 58.5 + x2 = 0 + 58.5

Reorder the terms:
-58.5 + 58.5 + 17.5x + x2 = 0 + 58.5

Combine like terms: -58.5 + 58.5 = 0.0
0.0 + 17.5x + x2 = 0 + 58.5
17.5x + x2 = 0 + 58.5

Combine like terms: 0 + 58.5 = 58.5
17.5x + x2 = 58.5

The x term is 17.5x.  Take half its coefficient (8.75).
Square it (76.5625) and add it to both sides.

Add '76.5625' to each side of the equation.
17.5x + 76.5625 + x2 = 58.5 + 76.5625

Reorder the terms:
76.5625 + 17.5x + x2 = 58.5 + 76.5625

Combine like terms: 58.5 + 76.5625 = 135.0625
76.5625 + 17.5x + x2 = 135.0625

Factor a perfect square on the left side:
(x + 8.75)(x + 8.75) = 135.0625

Calculate the square root of the right side: 11.621639299

Break this problem into two subproblems by setting 
(x + 8.75) equal to 11.621639299 and -11.621639299.

Subproblem 1

x + 8.75 = 11.621639299 Simplifying x + 8.75 = 11.621639299 Reorder the terms: 8.75 + x = 11.621639299 Solving 8.75 + x = 11.621639299 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8.75' to each side of the equation. 8.75 + -8.75 + x = 11.621639299 + -8.75 Combine like terms: 8.75 + -8.75 = 0.00 0.00 + x = 11.621639299 + -8.75 x = 11.621639299 + -8.75 Combine like terms: 11.621639299 + -8.75 = 2.871639299 x = 2.871639299 Simplifying x = 2.871639299

Subproblem 2

x + 8.75 = -11.621639299 Simplifying x + 8.75 = -11.621639299 Reorder the terms: 8.75 + x = -11.621639299 Solving 8.75 + x = -11.621639299 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8.75' to each side of the equation. 8.75 + -8.75 + x = -11.621639299 + -8.75 Combine like terms: 8.75 + -8.75 = 0.00 0.00 + x = -11.621639299 + -8.75 x = -11.621639299 + -8.75 Combine like terms: -11.621639299 + -8.75 = -20.371639299 x = -20.371639299 Simplifying x = -20.371639299

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.871639299, -20.371639299}

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