2x^2-22x=63

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Solution for 2x^2-22x=63 equation:


Simplifying
2x2 + -22x = 63

Reorder the terms:
-22x + 2x2 = 63

Solving
-22x + 2x2 = 63

Solving for variable 'x'.

Reorder the terms:
-63 + -22x + 2x2 = 63 + -63

Combine like terms: 63 + -63 = 0
-63 + -22x + 2x2 = 0

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

Divide each side by '2'.
-31.5 + -11x + x2 = 0

Move the constant term to the right:

Add '31.5' to each side of the equation.
-31.5 + -11x + 31.5 + x2 = 0 + 31.5

Reorder the terms:
-31.5 + 31.5 + -11x + x2 = 0 + 31.5

Combine like terms: -31.5 + 31.5 = 0.0
0.0 + -11x + x2 = 0 + 31.5
-11x + x2 = 0 + 31.5

Combine like terms: 0 + 31.5 = 31.5
-11x + x2 = 31.5

The x term is -11x.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11x + 30.25 + x2 = 31.5 + 30.25

Reorder the terms:
30.25 + -11x + x2 = 31.5 + 30.25

Combine like terms: 31.5 + 30.25 = 61.75
30.25 + -11x + x2 = 61.75

Factor a perfect square on the left side:
(x + -5.5)(x + -5.5) = 61.75

Calculate the square root of the right side: 7.858116823

Break this problem into two subproblems by setting 
(x + -5.5) equal to 7.858116823 and -7.858116823.

Subproblem 1

x + -5.5 = 7.858116823 Simplifying x + -5.5 = 7.858116823 Reorder the terms: -5.5 + x = 7.858116823 Solving -5.5 + x = 7.858116823 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = 7.858116823 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = 7.858116823 + 5.5 x = 7.858116823 + 5.5 Combine like terms: 7.858116823 + 5.5 = 13.358116823 x = 13.358116823 Simplifying x = 13.358116823

Subproblem 2

x + -5.5 = -7.858116823 Simplifying x + -5.5 = -7.858116823 Reorder the terms: -5.5 + x = -7.858116823 Solving -5.5 + x = -7.858116823 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + x = -7.858116823 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + x = -7.858116823 + 5.5 x = -7.858116823 + 5.5 Combine like terms: -7.858116823 + 5.5 = -2.358116823 x = -2.358116823 Simplifying x = -2.358116823

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.358116823, -2.358116823}

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