.0001x^2+.02x-2=0

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Solution for .0001x^2+.02x-2=0 equation:


Simplifying
0.0001x2 + 0.02x + -2 = 0

Reorder the terms:
-2 + 0.02x + 0.0001x2 = 0

Solving
-2 + 0.02x + 0.0001x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.0001'.
-20000 + 200x + x2 = 0

Move the constant term to the right:

Add '20000' to each side of the equation.
-20000 + 200x + 20000 + x2 = 0 + 20000

Reorder the terms:
-20000 + 20000 + 200x + x2 = 0 + 20000

Combine like terms: -20000 + 20000 = 0
0 + 200x + x2 = 0 + 20000
200x + x2 = 0 + 20000

Combine like terms: 0 + 20000 = 20000
200x + x2 = 20000

The x term is 200x.  Take half its coefficient (100).
Square it (10000) and add it to both sides.

Add '10000' to each side of the equation.
200x + 10000 + x2 = 20000 + 10000

Reorder the terms:
10000 + 200x + x2 = 20000 + 10000

Combine like terms: 20000 + 10000 = 30000
10000 + 200x + x2 = 30000

Factor a perfect square on the left side:
(x + 100)(x + 100) = 30000

Calculate the square root of the right side: 173.205080757

Break this problem into two subproblems by setting 
(x + 100) equal to 173.205080757 and -173.205080757.

Subproblem 1

x + 100 = 173.205080757 Simplifying x + 100 = 173.205080757 Reorder the terms: 100 + x = 173.205080757 Solving 100 + x = 173.205080757 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-100' to each side of the equation. 100 + -100 + x = 173.205080757 + -100 Combine like terms: 100 + -100 = 0 0 + x = 173.205080757 + -100 x = 173.205080757 + -100 Combine like terms: 173.205080757 + -100 = 73.205080757 x = 73.205080757 Simplifying x = 73.205080757

Subproblem 2

x + 100 = -173.205080757 Simplifying x + 100 = -173.205080757 Reorder the terms: 100 + x = -173.205080757 Solving 100 + x = -173.205080757 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-100' to each side of the equation. 100 + -100 + x = -173.205080757 + -100 Combine like terms: 100 + -100 = 0 0 + x = -173.205080757 + -100 x = -173.205080757 + -100 Combine like terms: -173.205080757 + -100 = -273.205080757 x = -273.205080757 Simplifying x = -273.205080757

Solution

The solution to the problem is based on the solutions from the subproblems. x = {73.205080757, -273.205080757}

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