x^2+22x-36=0

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Solution for x^2+22x-36=0 equation:


Simplifying
x2 + 22x + -36 = 0

Reorder the terms:
-36 + 22x + x2 = 0

Solving
-36 + 22x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '36' to each side of the equation.
-36 + 22x + 36 + x2 = 0 + 36

Reorder the terms:
-36 + 36 + 22x + x2 = 0 + 36

Combine like terms: -36 + 36 = 0
0 + 22x + x2 = 0 + 36
22x + x2 = 0 + 36

Combine like terms: 0 + 36 = 36
22x + x2 = 36

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 = 36 + 121

Reorder the terms:
121 + 22x + x2 = 36 + 121

Combine like terms: 36 + 121 = 157
121 + 22x + x2 = 157

Factor a perfect square on the left side:
(x + 11)(x + 11) = 157

Calculate the square root of the right side: 12.529964086

Break this problem into two subproblems by setting 
(x + 11) equal to 12.529964086 and -12.529964086.

Subproblem 1

x + 11 = 12.529964086 Simplifying x + 11 = 12.529964086 Reorder the terms: 11 + x = 12.529964086 Solving 11 + x = 12.529964086 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 = 12.529964086 + -11 Combine like terms: 11 + -11 = 0 0 + x = 12.529964086 + -11 x = 12.529964086 + -11 Combine like terms: 12.529964086 + -11 = 1.529964086 x = 1.529964086 Simplifying x = 1.529964086

Subproblem 2

x + 11 = -12.529964086 Simplifying x + 11 = -12.529964086 Reorder the terms: 11 + x = -12.529964086 Solving 11 + x = -12.529964086 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 = -12.529964086 + -11 Combine like terms: 11 + -11 = 0 0 + x = -12.529964086 + -11 x = -12.529964086 + -11 Combine like terms: -12.529964086 + -11 = -23.529964086 x = -23.529964086 Simplifying x = -23.529964086

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.529964086, -23.529964086}

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