2x^2-2x=49

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Solution for 2x^2-2x=49 equation:


Simplifying
2x2 + -2x = 49

Reorder the terms:
-2x + 2x2 = 49

Solving
-2x + 2x2 = 49

Solving for variable 'x'.

Reorder the terms:
-49 + -2x + 2x2 = 49 + -49

Combine like terms: 49 + -49 = 0
-49 + -2x + 2x2 = 0

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

Divide each side by '2'.
-24.5 + -1x + x2 = 0

Move the constant term to the right:

Add '24.5' to each side of the equation.
-24.5 + -1x + 24.5 + x2 = 0 + 24.5

Reorder the terms:
-24.5 + 24.5 + -1x + x2 = 0 + 24.5

Combine like terms: -24.5 + 24.5 = 0.0
0.0 + -1x + x2 = 0 + 24.5
-1x + x2 = 0 + 24.5

Combine like terms: 0 + 24.5 = 24.5
-1x + x2 = 24.5

The x term is -1x.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = 24.5 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 24.5 + 0.25

Combine like terms: 24.5 + 0.25 = 24.75
0.25 + -1x + x2 = 24.75

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 24.75

Calculate the square root of the right side: 4.974937186

Break this problem into two subproblems by setting 
(x + -0.5) equal to 4.974937186 and -4.974937186.

Subproblem 1

x + -0.5 = 4.974937186 Simplifying x + -0.5 = 4.974937186 Reorder the terms: -0.5 + x = 4.974937186 Solving -0.5 + x = 4.974937186 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 4.974937186 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 4.974937186 + 0.5 x = 4.974937186 + 0.5 Combine like terms: 4.974937186 + 0.5 = 5.474937186 x = 5.474937186 Simplifying x = 5.474937186

Subproblem 2

x + -0.5 = -4.974937186 Simplifying x + -0.5 = -4.974937186 Reorder the terms: -0.5 + x = -4.974937186 Solving -0.5 + x = -4.974937186 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -4.974937186 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -4.974937186 + 0.5 x = -4.974937186 + 0.5 Combine like terms: -4.974937186 + 0.5 = -4.474937186 x = -4.474937186 Simplifying x = -4.474937186

Solution

The solution to the problem is based on the solutions from the subproblems. x = {5.474937186, -4.474937186}

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