2x^2-x-252=0

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Solution for 2x^2-x-252=0 equation:


Simplifying
2x2 + -1x + -252 = 0

Reorder the terms:
-252 + -1x + 2x2 = 0

Solving
-252 + -1x + 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'.
-126 + -0.5x + x2 = 0

Move the constant term to the right:

Add '126' to each side of the equation.
-126 + -0.5x + 126 + x2 = 0 + 126

Reorder the terms:
-126 + 126 + -0.5x + x2 = 0 + 126

Combine like terms: -126 + 126 = 0
0 + -0.5x + x2 = 0 + 126
-0.5x + x2 = 0 + 126

Combine like terms: 0 + 126 = 126
-0.5x + x2 = 126

The x term is -0.5x.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5x + 0.0625 + x2 = 126 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = 126 + 0.0625

Combine like terms: 126 + 0.0625 = 126.0625
0.0625 + -0.5x + x2 = 126.0625

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = 126.0625

Calculate the square root of the right side: 11.227755786

Break this problem into two subproblems by setting 
(x + -0.25) equal to 11.227755786 and -11.227755786.

Subproblem 1

x + -0.25 = 11.227755786 Simplifying x + -0.25 = 11.227755786 Reorder the terms: -0.25 + x = 11.227755786 Solving -0.25 + x = 11.227755786 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = 11.227755786 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 11.227755786 + 0.25 x = 11.227755786 + 0.25 Combine like terms: 11.227755786 + 0.25 = 11.477755786 x = 11.477755786 Simplifying x = 11.477755786

Subproblem 2

x + -0.25 = -11.227755786 Simplifying x + -0.25 = -11.227755786 Reorder the terms: -0.25 + x = -11.227755786 Solving -0.25 + x = -11.227755786 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + x = -11.227755786 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -11.227755786 + 0.25 x = -11.227755786 + 0.25 Combine like terms: -11.227755786 + 0.25 = -10.977755786 x = -10.977755786 Simplifying x = -10.977755786

Solution

The solution to the problem is based on the solutions from the subproblems. x = {11.477755786, -10.977755786}

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