x^2-180x+100=0

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Solution for x^2-180x+100=0 equation:


Simplifying
x2 + -180x + 100 = 0

Reorder the terms:
100 + -180x + x2 = 0

Solving
100 + -180x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-100' to each side of the equation.
100 + -180x + -100 + x2 = 0 + -100

Reorder the terms:
100 + -100 + -180x + x2 = 0 + -100

Combine like terms: 100 + -100 = 0
0 + -180x + x2 = 0 + -100
-180x + x2 = 0 + -100

Combine like terms: 0 + -100 = -100
-180x + x2 = -100

The x term is -180x.  Take half its coefficient (-90).
Square it (8100) and add it to both sides.

Add '8100' to each side of the equation.
-180x + 8100 + x2 = -100 + 8100

Reorder the terms:
8100 + -180x + x2 = -100 + 8100

Combine like terms: -100 + 8100 = 8000
8100 + -180x + x2 = 8000

Factor a perfect square on the left side:
(x + -90)(x + -90) = 8000

Calculate the square root of the right side: 89.4427191

Break this problem into two subproblems by setting 
(x + -90) equal to 89.4427191 and -89.4427191.

Subproblem 1

x + -90 = 89.4427191 Simplifying x + -90 = 89.4427191 Reorder the terms: -90 + x = 89.4427191 Solving -90 + x = 89.4427191 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '90' to each side of the equation. -90 + 90 + x = 89.4427191 + 90 Combine like terms: -90 + 90 = 0 0 + x = 89.4427191 + 90 x = 89.4427191 + 90 Combine like terms: 89.4427191 + 90 = 179.4427191 x = 179.4427191 Simplifying x = 179.4427191

Subproblem 2

x + -90 = -89.4427191 Simplifying x + -90 = -89.4427191 Reorder the terms: -90 + x = -89.4427191 Solving -90 + x = -89.4427191 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '90' to each side of the equation. -90 + 90 + x = -89.4427191 + 90 Combine like terms: -90 + 90 = 0 0 + x = -89.4427191 + 90 x = -89.4427191 + 90 Combine like terms: -89.4427191 + 90 = 0.5572809 x = 0.5572809 Simplifying x = 0.5572809

Solution

The solution to the problem is based on the solutions from the subproblems. x = {179.4427191, 0.5572809}

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