2x^2-55x-35=0

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Solution for 2x^2-55x-35=0 equation:


Simplifying
2x2 + -55x + -35 = 0

Reorder the terms:
-35 + -55x + 2x2 = 0

Solving
-35 + -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'.
-17.5 + -27.5x + x2 = 0

Move the constant term to the right:

Add '17.5' to each side of the equation.
-17.5 + -27.5x + 17.5 + x2 = 0 + 17.5

Reorder the terms:
-17.5 + 17.5 + -27.5x + x2 = 0 + 17.5

Combine like terms: -17.5 + 17.5 = 0.0
0.0 + -27.5x + x2 = 0 + 17.5
-27.5x + x2 = 0 + 17.5

Combine like terms: 0 + 17.5 = 17.5
-27.5x + x2 = 17.5

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 = 17.5 + 189.0625

Reorder the terms:
189.0625 + -27.5x + x2 = 17.5 + 189.0625

Combine like terms: 17.5 + 189.0625 = 206.5625
189.0625 + -27.5x + x2 = 206.5625

Factor a perfect square on the left side:
(x + -13.75)(x + -13.75) = 206.5625

Calculate the square root of the right side: 14.372282352

Break this problem into two subproblems by setting 
(x + -13.75) equal to 14.372282352 and -14.372282352.

Subproblem 1

x + -13.75 = 14.372282352 Simplifying x + -13.75 = 14.372282352 Reorder the terms: -13.75 + x = 14.372282352 Solving -13.75 + x = 14.372282352 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 = 14.372282352 + 13.75 Combine like terms: -13.75 + 13.75 = 0.00 0.00 + x = 14.372282352 + 13.75 x = 14.372282352 + 13.75 Combine like terms: 14.372282352 + 13.75 = 28.122282352 x = 28.122282352 Simplifying x = 28.122282352

Subproblem 2

x + -13.75 = -14.372282352 Simplifying x + -13.75 = -14.372282352 Reorder the terms: -13.75 + x = -14.372282352 Solving -13.75 + x = -14.372282352 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 = -14.372282352 + 13.75 Combine like terms: -13.75 + 13.75 = 0.00 0.00 + x = -14.372282352 + 13.75 x = -14.372282352 + 13.75 Combine like terms: -14.372282352 + 13.75 = -0.622282352 x = -0.622282352 Simplifying x = -0.622282352

Solution

The solution to the problem is based on the solutions from the subproblems. x = {28.122282352, -0.622282352}

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