2x^2-7x-250=0

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Solution for 2x^2-7x-250=0 equation:


Simplifying
2x2 + -7x + -250 = 0

Reorder the terms:
-250 + -7x + 2x2 = 0

Solving
-250 + -7x + 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'.
-125 + -3.5x + x2 = 0

Move the constant term to the right:

Add '125' to each side of the equation.
-125 + -3.5x + 125 + x2 = 0 + 125

Reorder the terms:
-125 + 125 + -3.5x + x2 = 0 + 125

Combine like terms: -125 + 125 = 0
0 + -3.5x + x2 = 0 + 125
-3.5x + x2 = 0 + 125

Combine like terms: 0 + 125 = 125
-3.5x + x2 = 125

The x term is -3.5x.  Take half its coefficient (-1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
-3.5x + 3.0625 + x2 = 125 + 3.0625

Reorder the terms:
3.0625 + -3.5x + x2 = 125 + 3.0625

Combine like terms: 125 + 3.0625 = 128.0625
3.0625 + -3.5x + x2 = 128.0625

Factor a perfect square on the left side:
(x + -1.75)(x + -1.75) = 128.0625

Calculate the square root of the right side: 11.316470298

Break this problem into two subproblems by setting 
(x + -1.75) equal to 11.316470298 and -11.316470298.

Subproblem 1

x + -1.75 = 11.316470298 Simplifying x + -1.75 = 11.316470298 Reorder the terms: -1.75 + x = 11.316470298 Solving -1.75 + x = 11.316470298 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = 11.316470298 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = 11.316470298 + 1.75 x = 11.316470298 + 1.75 Combine like terms: 11.316470298 + 1.75 = 13.066470298 x = 13.066470298 Simplifying x = 13.066470298

Subproblem 2

x + -1.75 = -11.316470298 Simplifying x + -1.75 = -11.316470298 Reorder the terms: -1.75 + x = -11.316470298 Solving -1.75 + x = -11.316470298 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.75' to each side of the equation. -1.75 + 1.75 + x = -11.316470298 + 1.75 Combine like terms: -1.75 + 1.75 = 0.00 0.00 + x = -11.316470298 + 1.75 x = -11.316470298 + 1.75 Combine like terms: -11.316470298 + 1.75 = -9.566470298 x = -9.566470298 Simplifying x = -9.566470298

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.066470298, -9.566470298}

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