x^2-22x=100

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Solution for x^2-22x=100 equation:


Simplifying
x2 + -22x = 100

Reorder the terms:
-22x + x2 = 100

Solving
-22x + x2 = 100

Solving for variable 'x'.

Reorder the terms:
-100 + -22x + x2 = 100 + -100

Combine like terms: 100 + -100 = 0
-100 + -22x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '100' to each side of the equation.
-100 + -22x + 100 + x2 = 0 + 100

Reorder the terms:
-100 + 100 + -22x + x2 = 0 + 100

Combine like terms: -100 + 100 = 0
0 + -22x + x2 = 0 + 100
-22x + x2 = 0 + 100

Combine like terms: 0 + 100 = 100
-22x + x2 = 100

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 = 100 + 121

Reorder the terms:
121 + -22x + x2 = 100 + 121

Combine like terms: 100 + 121 = 221
121 + -22x + x2 = 221

Factor a perfect square on the left side:
(x + -11)(x + -11) = 221

Calculate the square root of the right side: 14.866068747

Break this problem into two subproblems by setting 
(x + -11) equal to 14.866068747 and -14.866068747.

Subproblem 1

x + -11 = 14.866068747 Simplifying x + -11 = 14.866068747 Reorder the terms: -11 + x = 14.866068747 Solving -11 + x = 14.866068747 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 = 14.866068747 + 11 Combine like terms: -11 + 11 = 0 0 + x = 14.866068747 + 11 x = 14.866068747 + 11 Combine like terms: 14.866068747 + 11 = 25.866068747 x = 25.866068747 Simplifying x = 25.866068747

Subproblem 2

x + -11 = -14.866068747 Simplifying x + -11 = -14.866068747 Reorder the terms: -11 + x = -14.866068747 Solving -11 + x = -14.866068747 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 = -14.866068747 + 11 Combine like terms: -11 + 11 = 0 0 + x = -14.866068747 + 11 x = -14.866068747 + 11 Combine like terms: -14.866068747 + 11 = -3.866068747 x = -3.866068747 Simplifying x = -3.866068747

Solution

The solution to the problem is based on the solutions from the subproblems. x = {25.866068747, -3.866068747}

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