x^2-36x+18=0

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Solution for x^2-36x+18=0 equation:


Simplifying
x2 + -36x + 18 = 0

Reorder the terms:
18 + -36x + x2 = 0

Solving
18 + -36x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-18' to each side of the equation.
18 + -36x + -18 + x2 = 0 + -18

Reorder the terms:
18 + -18 + -36x + x2 = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -36x + x2 = 0 + -18
-36x + x2 = 0 + -18

Combine like terms: 0 + -18 = -18
-36x + x2 = -18

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 = -18 + 324

Reorder the terms:
324 + -36x + x2 = -18 + 324

Combine like terms: -18 + 324 = 306
324 + -36x + x2 = 306

Factor a perfect square on the left side:
(x + -18)(x + -18) = 306

Calculate the square root of the right side: 17.492855685

Break this problem into two subproblems by setting 
(x + -18) equal to 17.492855685 and -17.492855685.

Subproblem 1

x + -18 = 17.492855685 Simplifying x + -18 = 17.492855685 Reorder the terms: -18 + x = 17.492855685 Solving -18 + x = 17.492855685 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 = 17.492855685 + 18 Combine like terms: -18 + 18 = 0 0 + x = 17.492855685 + 18 x = 17.492855685 + 18 Combine like terms: 17.492855685 + 18 = 35.492855685 x = 35.492855685 Simplifying x = 35.492855685

Subproblem 2

x + -18 = -17.492855685 Simplifying x + -18 = -17.492855685 Reorder the terms: -18 + x = -17.492855685 Solving -18 + x = -17.492855685 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 = -17.492855685 + 18 Combine like terms: -18 + 18 = 0 0 + x = -17.492855685 + 18 x = -17.492855685 + 18 Combine like terms: -17.492855685 + 18 = 0.507144315 x = 0.507144315 Simplifying x = 0.507144315

Solution

The solution to the problem is based on the solutions from the subproblems. x = {35.492855685, 0.507144315}

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