0.04x+0.06x(10000-x)=480

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Solution for 0.04x+0.06x(10000-x)=480 equation:


Simplifying
0.04x + 0.06x(10000 + -1x) = 480
0.04x + (10000 * 0.06x + -1x * 0.06x) = 480
0.04x + (600x + -0.06x2) = 480

Combine like terms: 0.04x + 600x = 600.04x
600.04x + -0.06x2 = 480

Solving
600.04x + -0.06x2 = 480

Solving for variable 'x'.

Reorder the terms:
-480 + 600.04x + -0.06x2 = 480 + -480

Combine like terms: 480 + -480 = 0
-480 + 600.04x + -0.06x2 = 0

Begin completing the square.  Divide all terms by
-0.06 the coefficient of the squared term: 

Divide each side by '-0.06'.
8000 + -10000.66667x + x2 = 0

Move the constant term to the right:

Add '-8000' to each side of the equation.
8000 + -10000.66667x + -8000 + x2 = 0 + -8000

Reorder the terms:
8000 + -8000 + -10000.66667x + x2 = 0 + -8000

Combine like terms: 8000 + -8000 = 0
0 + -10000.66667x + x2 = 0 + -8000
-10000.66667x + x2 = 0 + -8000

Combine like terms: 0 + -8000 = -8000
-10000.66667x + x2 = -8000

The x term is -10000.66667x.  Take half its coefficient (-5000.333335).
Square it (25003333.46) and add it to both sides.

Add '25003333.46' to each side of the equation.
-10000.66667x + 25003333.46 + x2 = -8000 + 25003333.46

Reorder the terms:
25003333.46 + -10000.66667x + x2 = -8000 + 25003333.46

Combine like terms: -8000 + 25003333.46 = 24995333.46
25003333.46 + -10000.66667x + x2 = 24995333.46

Factor a perfect square on the left side:
(x + -5000.333335)(x + -5000.333335) = 24995333.46

Calculate the square root of the right side: 4999.533324221

Break this problem into two subproblems by setting 
(x + -5000.333335) equal to 4999.533324221 and -4999.533324221.

Subproblem 1

x + -5000.333335 = 4999.533324221 Simplifying x + -5000.333335 = 4999.533324221 Reorder the terms: -5000.333335 + x = 4999.533324221 Solving -5000.333335 + x = 4999.533324221 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5000.333335' to each side of the equation. -5000.333335 + 5000.333335 + x = 4999.533324221 + 5000.333335 Combine like terms: -5000.333335 + 5000.333335 = 0.000000 0.000000 + x = 4999.533324221 + 5000.333335 x = 4999.533324221 + 5000.333335 Combine like terms: 4999.533324221 + 5000.333335 = 9999.866659221 x = 9999.866659221 Simplifying x = 9999.866659221

Subproblem 2

x + -5000.333335 = -4999.533324221 Simplifying x + -5000.333335 = -4999.533324221 Reorder the terms: -5000.333335 + x = -4999.533324221 Solving -5000.333335 + x = -4999.533324221 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5000.333335' to each side of the equation. -5000.333335 + 5000.333335 + x = -4999.533324221 + 5000.333335 Combine like terms: -5000.333335 + 5000.333335 = 0.000000 0.000000 + x = -4999.533324221 + 5000.333335 x = -4999.533324221 + 5000.333335 Combine like terms: -4999.533324221 + 5000.333335 = 0.800010779 x = 0.800010779 Simplifying x = 0.800010779

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9999.866659221, 0.800010779}

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