2x^2-x=224

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Solution for 2x^2-x=224 equation:


Simplifying
2x2 + -1x = 224

Reorder the terms:
-1x + 2x2 = 224

Solving
-1x + 2x2 = 224

Solving for variable 'x'.

Reorder the terms:
-224 + -1x + 2x2 = 224 + -224

Combine like terms: 224 + -224 = 0
-224 + -1x + 2x2 = 0

Begin completing the square.  Divide all terms by
2 the coefficient of the squared term: 

Divide each side by '2'.
-112 + -0.5x + x2 = 0

Move the constant term to the right:

Add '112' to each side of the equation.
-112 + -0.5x + 112 + x2 = 0 + 112

Reorder the terms:
-112 + 112 + -0.5x + x2 = 0 + 112

Combine like terms: -112 + 112 = 0
0 + -0.5x + x2 = 0 + 112
-0.5x + x2 = 0 + 112

Combine like terms: 0 + 112 = 112
-0.5x + x2 = 112

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 = 112 + 0.0625

Reorder the terms:
0.0625 + -0.5x + x2 = 112 + 0.0625

Combine like terms: 112 + 0.0625 = 112.0625
0.0625 + -0.5x + x2 = 112.0625

Factor a perfect square on the left side:
(x + -0.25)(x + -0.25) = 112.0625

Calculate the square root of the right side: 10.58595768

Break this problem into two subproblems by setting 
(x + -0.25) equal to 10.58595768 and -10.58595768.

Subproblem 1

x + -0.25 = 10.58595768 Simplifying x + -0.25 = 10.58595768 Reorder the terms: -0.25 + x = 10.58595768 Solving -0.25 + x = 10.58595768 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 = 10.58595768 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = 10.58595768 + 0.25 x = 10.58595768 + 0.25 Combine like terms: 10.58595768 + 0.25 = 10.83595768 x = 10.83595768 Simplifying x = 10.83595768

Subproblem 2

x + -0.25 = -10.58595768 Simplifying x + -0.25 = -10.58595768 Reorder the terms: -0.25 + x = -10.58595768 Solving -0.25 + x = -10.58595768 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 = -10.58595768 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + x = -10.58595768 + 0.25 x = -10.58595768 + 0.25 Combine like terms: -10.58595768 + 0.25 = -10.33595768 x = -10.33595768 Simplifying x = -10.33595768

Solution

The solution to the problem is based on the solutions from the subproblems. x = {10.83595768, -10.33595768}

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