.19x=2.5+.15-.0001x^2

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Solution for .19x=2.5+.15-.0001x^2 equation:


Simplifying
0.19x = 2.5 + 0.15 + -0.0001x2

Combine like terms: 2.5 + 0.15 = 2.65
0.19x = 2.65 + -0.0001x2

Solving
0.19x = 2.65 + -0.0001x2

Solving for variable 'x'.

Reorder the terms:
-2.65 + 0.19x + 0.0001x2 = 2.65 + -0.0001x2 + -2.65 + 0.0001x2

Reorder the terms:
-2.65 + 0.19x + 0.0001x2 = 2.65 + -2.65 + -0.0001x2 + 0.0001x2

Combine like terms: 2.65 + -2.65 = 0.00
-2.65 + 0.19x + 0.0001x2 = 0.00 + -0.0001x2 + 0.0001x2
-2.65 + 0.19x + 0.0001x2 = -0.0001x2 + 0.0001x2

Combine like terms: -0.0001x2 + 0.0001x2 = 0.0000
-2.65 + 0.19x + 0.0001x2 = 0.0000

Begin completing the square.  Divide all terms by
0.0001 the coefficient of the squared term: 

Divide each side by '0.0001'.
-26500 + 1900x + x2 = 0

Move the constant term to the right:

Add '26500' to each side of the equation.
-26500 + 1900x + 26500 + x2 = 0 + 26500

Reorder the terms:
-26500 + 26500 + 1900x + x2 = 0 + 26500

Combine like terms: -26500 + 26500 = 0
0 + 1900x + x2 = 0 + 26500
1900x + x2 = 0 + 26500

Combine like terms: 0 + 26500 = 26500
1900x + x2 = 26500

The x term is 1900x.  Take half its coefficient (950).
Square it (902500) and add it to both sides.

Add '902500' to each side of the equation.
1900x + 902500 + x2 = 26500 + 902500

Reorder the terms:
902500 + 1900x + x2 = 26500 + 902500

Combine like terms: 26500 + 902500 = 929000
902500 + 1900x + x2 = 929000

Factor a perfect square on the left side:
(x + 950)(x + 950) = 929000

Calculate the square root of the right side: 963.846460802

Break this problem into two subproblems by setting 
(x + 950) equal to 963.846460802 and -963.846460802.

Subproblem 1

x + 950 = 963.846460802 Simplifying x + 950 = 963.846460802 Reorder the terms: 950 + x = 963.846460802 Solving 950 + x = 963.846460802 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-950' to each side of the equation. 950 + -950 + x = 963.846460802 + -950 Combine like terms: 950 + -950 = 0 0 + x = 963.846460802 + -950 x = 963.846460802 + -950 Combine like terms: 963.846460802 + -950 = 13.846460802 x = 13.846460802 Simplifying x = 13.846460802

Subproblem 2

x + 950 = -963.846460802 Simplifying x + 950 = -963.846460802 Reorder the terms: 950 + x = -963.846460802 Solving 950 + x = -963.846460802 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-950' to each side of the equation. 950 + -950 + x = -963.846460802 + -950 Combine like terms: 950 + -950 = 0 0 + x = -963.846460802 + -950 x = -963.846460802 + -950 Combine like terms: -963.846460802 + -950 = -1913.846460802 x = -1913.846460802 Simplifying x = -1913.846460802

Solution

The solution to the problem is based on the solutions from the subproblems. x = {13.846460802, -1913.846460802}

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