-0.001x^2+3x-525+.55x=0

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Solution for -0.001x^2+3x-525+.55x=0 equation:


Simplifying
-0.001x2 + 3x + -525 + 0.55x = 0

Reorder the terms:
-525 + 3x + 0.55x + -0.001x2 = 0

Combine like terms: 3x + 0.55x = 3.55x
-525 + 3.55x + -0.001x2 = 0

Solving
-525 + 3.55x + -0.001x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.001 the coefficient of the squared term: 

Divide each side by '-0.001'.
525000 + -3550x + x2 = 0

Move the constant term to the right:

Add '-525000' to each side of the equation.
525000 + -3550x + -525000 + x2 = 0 + -525000

Reorder the terms:
525000 + -525000 + -3550x + x2 = 0 + -525000

Combine like terms: 525000 + -525000 = 0
0 + -3550x + x2 = 0 + -525000
-3550x + x2 = 0 + -525000

Combine like terms: 0 + -525000 = -525000
-3550x + x2 = -525000

The x term is -3550x.  Take half its coefficient (-1775).
Square it (3150625) and add it to both sides.

Add '3150625' to each side of the equation.
-3550x + 3150625 + x2 = -525000 + 3150625

Reorder the terms:
3150625 + -3550x + x2 = -525000 + 3150625

Combine like terms: -525000 + 3150625 = 2625625
3150625 + -3550x + x2 = 2625625

Factor a perfect square on the left side:
(x + -1775)(x + -1775) = 2625625

Calculate the square root of the right side: 1620.37804231

Break this problem into two subproblems by setting 
(x + -1775) equal to 1620.37804231 and -1620.37804231.

Subproblem 1

x + -1775 = 1620.37804231 Simplifying x + -1775 = 1620.37804231 Reorder the terms: -1775 + x = 1620.37804231 Solving -1775 + x = 1620.37804231 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1775' to each side of the equation. -1775 + 1775 + x = 1620.37804231 + 1775 Combine like terms: -1775 + 1775 = 0 0 + x = 1620.37804231 + 1775 x = 1620.37804231 + 1775 Combine like terms: 1620.37804231 + 1775 = 3395.37804231 x = 3395.37804231 Simplifying x = 3395.37804231

Subproblem 2

x + -1775 = -1620.37804231 Simplifying x + -1775 = -1620.37804231 Reorder the terms: -1775 + x = -1620.37804231 Solving -1775 + x = -1620.37804231 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1775' to each side of the equation. -1775 + 1775 + x = -1620.37804231 + 1775 Combine like terms: -1775 + 1775 = 0 0 + x = -1620.37804231 + 1775 x = -1620.37804231 + 1775 Combine like terms: -1620.37804231 + 1775 = 154.62195769 x = 154.62195769 Simplifying x = 154.62195769

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3395.37804231, 154.62195769}

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