-.0025x^2+12x-4400=0

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Solution for -.0025x^2+12x-4400=0 equation:


Simplifying
-0.0025x2 + 12x + -4400 = 0

Reorder the terms:
-4400 + 12x + -0.0025x2 = 0

Solving
-4400 + 12x + -0.0025x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.0025 the coefficient of the squared term: 

Divide each side by '-0.0025'.
1760000 + -4800x + x2 = 0

Move the constant term to the right:

Add '-1760000' to each side of the equation.
1760000 + -4800x + -1760000 + x2 = 0 + -1760000

Reorder the terms:
1760000 + -1760000 + -4800x + x2 = 0 + -1760000

Combine like terms: 1760000 + -1760000 = 0
0 + -4800x + x2 = 0 + -1760000
-4800x + x2 = 0 + -1760000

Combine like terms: 0 + -1760000 = -1760000
-4800x + x2 = -1760000

The x term is -4800x.  Take half its coefficient (-2400).
Square it (5760000) and add it to both sides.

Add '5760000' to each side of the equation.
-4800x + 5760000 + x2 = -1760000 + 5760000

Reorder the terms:
5760000 + -4800x + x2 = -1760000 + 5760000

Combine like terms: -1760000 + 5760000 = 4000000
5760000 + -4800x + x2 = 4000000

Factor a perfect square on the left side:
(x + -2400)(x + -2400) = 4000000

Calculate the square root of the right side: 2000

Break this problem into two subproblems by setting 
(x + -2400) equal to 2000 and -2000.

Subproblem 1

x + -2400 = 2000 Simplifying x + -2400 = 2000 Reorder the terms: -2400 + x = 2000 Solving -2400 + x = 2000 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2400' to each side of the equation. -2400 + 2400 + x = 2000 + 2400 Combine like terms: -2400 + 2400 = 0 0 + x = 2000 + 2400 x = 2000 + 2400 Combine like terms: 2000 + 2400 = 4400 x = 4400 Simplifying x = 4400

Subproblem 2

x + -2400 = -2000 Simplifying x + -2400 = -2000 Reorder the terms: -2400 + x = -2000 Solving -2400 + x = -2000 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2400' to each side of the equation. -2400 + 2400 + x = -2000 + 2400 Combine like terms: -2400 + 2400 = 0 0 + x = -2000 + 2400 x = -2000 + 2400 Combine like terms: -2000 + 2400 = 400 x = 400 Simplifying x = 400

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4400, 400}

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