x^2-22x=57

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Solution for x^2-22x=57 equation:


Simplifying
x2 + -22x = 57

Reorder the terms:
-22x + x2 = 57

Solving
-22x + x2 = 57

Solving for variable 'x'.

Reorder the terms:
-57 + -22x + x2 = 57 + -57

Combine like terms: 57 + -57 = 0
-57 + -22x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '57' to each side of the equation.
-57 + -22x + 57 + x2 = 0 + 57

Reorder the terms:
-57 + 57 + -22x + x2 = 0 + 57

Combine like terms: -57 + 57 = 0
0 + -22x + x2 = 0 + 57
-22x + x2 = 0 + 57

Combine like terms: 0 + 57 = 57
-22x + x2 = 57

The x term is -22x.  Take half its coefficient (-11).
Square it (121) and add it to both sides.

Add '121' to each side of the equation.
-22x + 121 + x2 = 57 + 121

Reorder the terms:
121 + -22x + x2 = 57 + 121

Combine like terms: 57 + 121 = 178
121 + -22x + x2 = 178

Factor a perfect square on the left side:
(x + -11)(x + -11) = 178

Calculate the square root of the right side: 13.341664064

Break this problem into two subproblems by setting 
(x + -11) equal to 13.341664064 and -13.341664064.

Subproblem 1

x + -11 = 13.341664064 Simplifying x + -11 = 13.341664064 Reorder the terms: -11 + x = 13.341664064 Solving -11 + x = 13.341664064 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + x = 13.341664064 + 11 Combine like terms: -11 + 11 = 0 0 + x = 13.341664064 + 11 x = 13.341664064 + 11 Combine like terms: 13.341664064 + 11 = 24.341664064 x = 24.341664064 Simplifying x = 24.341664064

Subproblem 2

x + -11 = -13.341664064 Simplifying x + -11 = -13.341664064 Reorder the terms: -11 + x = -13.341664064 Solving -11 + x = -13.341664064 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '11' to each side of the equation. -11 + 11 + x = -13.341664064 + 11 Combine like terms: -11 + 11 = 0 0 + x = -13.341664064 + 11 x = -13.341664064 + 11 Combine like terms: -13.341664064 + 11 = -2.341664064 x = -2.341664064 Simplifying x = -2.341664064

Solution

The solution to the problem is based on the solutions from the subproblems. x = {24.341664064, -2.341664064}

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