0=x^2-36x+191

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Solution for 0=x^2-36x+191 equation:


Simplifying
0 = x2 + -36x + 191

Reorder the terms:
0 = 191 + -36x + x2

Solving
0 = 191 + -36x + x2

Solving for variable 'x'.

Combine like terms: 0 + -191 = -191
-191 + 36x + -1x2 = 191 + -36x + x2 + -191 + 36x + -1x2

Reorder the terms:
-191 + 36x + -1x2 = 191 + -191 + -36x + 36x + x2 + -1x2

Combine like terms: 191 + -191 = 0
-191 + 36x + -1x2 = 0 + -36x + 36x + x2 + -1x2
-191 + 36x + -1x2 = -36x + 36x + x2 + -1x2

Combine like terms: -36x + 36x = 0
-191 + 36x + -1x2 = 0 + x2 + -1x2
-191 + 36x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
-191 + 36x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
191 + -36x + x2 = 0

Move the constant term to the right:

Add '-191' to each side of the equation.
191 + -36x + -191 + x2 = 0 + -191

Reorder the terms:
191 + -191 + -36x + x2 = 0 + -191

Combine like terms: 191 + -191 = 0
0 + -36x + x2 = 0 + -191
-36x + x2 = 0 + -191

Combine like terms: 0 + -191 = -191
-36x + x2 = -191

The x term is -36x.  Take half its coefficient (-18).
Square it (324) and add it to both sides.

Add '324' to each side of the equation.
-36x + 324 + x2 = -191 + 324

Reorder the terms:
324 + -36x + x2 = -191 + 324

Combine like terms: -191 + 324 = 133
324 + -36x + x2 = 133

Factor a perfect square on the left side:
(x + -18)(x + -18) = 133

Calculate the square root of the right side: 11.532562595

Break this problem into two subproblems by setting 
(x + -18) equal to 11.532562595 and -11.532562595.

Subproblem 1

x + -18 = 11.532562595 Simplifying x + -18 = 11.532562595 Reorder the terms: -18 + x = 11.532562595 Solving -18 + x = 11.532562595 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + x = 11.532562595 + 18 Combine like terms: -18 + 18 = 0 0 + x = 11.532562595 + 18 x = 11.532562595 + 18 Combine like terms: 11.532562595 + 18 = 29.532562595 x = 29.532562595 Simplifying x = 29.532562595

Subproblem 2

x + -18 = -11.532562595 Simplifying x + -18 = -11.532562595 Reorder the terms: -18 + x = -11.532562595 Solving -18 + x = -11.532562595 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '18' to each side of the equation. -18 + 18 + x = -11.532562595 + 18 Combine like terms: -18 + 18 = 0 0 + x = -11.532562595 + 18 x = -11.532562595 + 18 Combine like terms: -11.532562595 + 18 = 6.467437405 x = 6.467437405 Simplifying x = 6.467437405

Solution

The solution to the problem is based on the solutions from the subproblems. x = {29.532562595, 6.467437405}

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