100x^2-3.2x-0.1805=0

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Solution for 100x^2-3.2x-0.1805=0 equation:


Simplifying
100x2 + -3.2x + -0.1805 = 0

Reorder the terms:
-0.1805 + -3.2x + 100x2 = 0

Solving
-0.1805 + -3.2x + 100x2 = 0

Solving for variable 'x'.

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

Divide each side by '100'.
-0.001805 + -0.032x + x2 = 0

Move the constant term to the right:

Add '0.001805' to each side of the equation.
-0.001805 + -0.032x + 0.001805 + x2 = 0 + 0.001805

Reorder the terms:
-0.001805 + 0.001805 + -0.032x + x2 = 0 + 0.001805

Combine like terms: -0.001805 + 0.001805 = 0.000000
0.000000 + -0.032x + x2 = 0 + 0.001805
-0.032x + x2 = 0 + 0.001805

Combine like terms: 0 + 0.001805 = 0.001805
-0.032x + x2 = 0.001805

The x term is -0.032x.  Take half its coefficient (-0.016).
Square it (0.000256) and add it to both sides.

Add '0.000256' to each side of the equation.
-0.032x + 0.000256 + x2 = 0.001805 + 0.000256

Reorder the terms:
0.000256 + -0.032x + x2 = 0.001805 + 0.000256

Combine like terms: 0.001805 + 0.000256 = 0.002061
0.000256 + -0.032x + x2 = 0.002061

Factor a perfect square on the left side:
(x + -0.016)(x + -0.016) = 0.002061

Calculate the square root of the right side: 0.045398238

Break this problem into two subproblems by setting 
(x + -0.016) equal to 0.045398238 and -0.045398238.

Subproblem 1

x + -0.016 = 0.045398238 Simplifying x + -0.016 = 0.045398238 Reorder the terms: -0.016 + x = 0.045398238 Solving -0.016 + x = 0.045398238 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.016' to each side of the equation. -0.016 + 0.016 + x = 0.045398238 + 0.016 Combine like terms: -0.016 + 0.016 = 0.000 0.000 + x = 0.045398238 + 0.016 x = 0.045398238 + 0.016 Combine like terms: 0.045398238 + 0.016 = 0.061398238 x = 0.061398238 Simplifying x = 0.061398238

Subproblem 2

x + -0.016 = -0.045398238 Simplifying x + -0.016 = -0.045398238 Reorder the terms: -0.016 + x = -0.045398238 Solving -0.016 + x = -0.045398238 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.016' to each side of the equation. -0.016 + 0.016 + x = -0.045398238 + 0.016 Combine like terms: -0.016 + 0.016 = 0.000 0.000 + x = -0.045398238 + 0.016 x = -0.045398238 + 0.016 Combine like terms: -0.045398238 + 0.016 = -0.029398238 x = -0.029398238 Simplifying x = -0.029398238

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.061398238, -0.029398238}

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