.11x+.08x(165000-x)=15750

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Solution for .11x+.08x(165000-x)=15750 equation:


Simplifying
0.11x + 0.08x(165000 + -1x) = 15750
0.11x + (165000 * 0.08x + -1x * 0.08x) = 15750
0.11x + (13200x + -0.08x2) = 15750

Combine like terms: 0.11x + 13200x = 13200.11x
13200.11x + -0.08x2 = 15750

Solving
13200.11x + -0.08x2 = 15750

Solving for variable 'x'.

Reorder the terms:
-15750 + 13200.11x + -0.08x2 = 15750 + -15750

Combine like terms: 15750 + -15750 = 0
-15750 + 13200.11x + -0.08x2 = 0

Begin completing the square.  Divide all terms by
-0.08 the coefficient of the squared term: 

Divide each side by '-0.08'.
196875 + -165001.375x + x2 = 0

Move the constant term to the right:

Add '-196875' to each side of the equation.
196875 + -165001.375x + -196875 + x2 = 0 + -196875

Reorder the terms:
196875 + -196875 + -165001.375x + x2 = 0 + -196875

Combine like terms: 196875 + -196875 = 0
0 + -165001.375x + x2 = 0 + -196875
-165001.375x + x2 = 0 + -196875

Combine like terms: 0 + -196875 = -196875
-165001.375x + x2 = -196875

The x term is -165001.375x.  Take half its coefficient (-82500.6875).
Square it (6806363438) and add it to both sides.

Add '6806363438' to each side of the equation.
-165001.375x + 6806363438 + x2 = -196875 + 6806363438

Reorder the terms:
6806363438 + -165001.375x + x2 = -196875 + 6806363438

Combine like terms: -196875 + 6806363438 = 6806166563
6806363438 + -165001.375x + x2 = 6806166563

Factor a perfect square on the left side:
(x + -82500.6875)(x + -82500.6875) = 6806166563

Calculate the square root of the right side: 82499.494319662

Break this problem into two subproblems by setting 
(x + -82500.6875) equal to 82499.494319662 and -82499.494319662.

Subproblem 1

x + -82500.6875 = 82499.494319662 Simplifying x + -82500.6875 = 82499.494319662 Reorder the terms: -82500.6875 + x = 82499.494319662 Solving -82500.6875 + x = 82499.494319662 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '82500.6875' to each side of the equation. -82500.6875 + 82500.6875 + x = 82499.494319662 + 82500.6875 Combine like terms: -82500.6875 + 82500.6875 = 0.0000 0.0000 + x = 82499.494319662 + 82500.6875 x = 82499.494319662 + 82500.6875 Combine like terms: 82499.494319662 + 82500.6875 = 165000.181819662 x = 165000.181819662 Simplifying x = 165000.181819662

Subproblem 2

x + -82500.6875 = -82499.494319662 Simplifying x + -82500.6875 = -82499.494319662 Reorder the terms: -82500.6875 + x = -82499.494319662 Solving -82500.6875 + x = -82499.494319662 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '82500.6875' to each side of the equation. -82500.6875 + 82500.6875 + x = -82499.494319662 + 82500.6875 Combine like terms: -82500.6875 + 82500.6875 = 0.0000 0.0000 + x = -82499.494319662 + 82500.6875 x = -82499.494319662 + 82500.6875 Combine like terms: -82499.494319662 + 82500.6875 = 1.193180338 x = 1.193180338 Simplifying x = 1.193180338

Solution

The solution to the problem is based on the solutions from the subproblems. x = {165000.181819662, 1.193180338}

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