0.01125x^2-13.05x+1800=0

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Solution for 0.01125x^2-13.05x+1800=0 equation:


Simplifying
0.01125x2 + -13.05x + 1800 = 0

Reorder the terms:
1800 + -13.05x + 0.01125x2 = 0

Solving
1800 + -13.05x + 0.01125x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
0.01125 the coefficient of the squared term: 

Divide each side by '0.01125'.
160000 + -1160x + x2 = 0

Move the constant term to the right:

Add '-160000' to each side of the equation.
160000 + -1160x + -160000 + x2 = 0 + -160000

Reorder the terms:
160000 + -160000 + -1160x + x2 = 0 + -160000

Combine like terms: 160000 + -160000 = 0
0 + -1160x + x2 = 0 + -160000
-1160x + x2 = 0 + -160000

Combine like terms: 0 + -160000 = -160000
-1160x + x2 = -160000

The x term is -1160x.  Take half its coefficient (-580).
Square it (336400) and add it to both sides.

Add '336400' to each side of the equation.
-1160x + 336400 + x2 = -160000 + 336400

Reorder the terms:
336400 + -1160x + x2 = -160000 + 336400

Combine like terms: -160000 + 336400 = 176400
336400 + -1160x + x2 = 176400

Factor a perfect square on the left side:
(x + -580)(x + -580) = 176400

Calculate the square root of the right side: 420

Break this problem into two subproblems by setting 
(x + -580) equal to 420 and -420.

Subproblem 1

x + -580 = 420 Simplifying x + -580 = 420 Reorder the terms: -580 + x = 420 Solving -580 + x = 420 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '580' to each side of the equation. -580 + 580 + x = 420 + 580 Combine like terms: -580 + 580 = 0 0 + x = 420 + 580 x = 420 + 580 Combine like terms: 420 + 580 = 1000 x = 1000 Simplifying x = 1000

Subproblem 2

x + -580 = -420 Simplifying x + -580 = -420 Reorder the terms: -580 + x = -420 Solving -580 + x = -420 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '580' to each side of the equation. -580 + 580 + x = -420 + 580 Combine like terms: -580 + 580 = 0 0 + x = -420 + 580 x = -420 + 580 Combine like terms: -420 + 580 = 160 x = 160 Simplifying x = 160

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1000, 160}

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