-4.9x^2+2x-0.204=0

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Solution for -4.9x^2+2x-0.204=0 equation:


Simplifying
-4.9x2 + 2x + -0.204 = 0

Reorder the terms:
-0.204 + 2x + -4.9x2 = 0

Solving
-0.204 + 2x + -4.9x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-4.9 the coefficient of the squared term: 

Divide each side by '-4.9'.
0.04163265306 + -0.4081632653x + x2 = 0

Move the constant term to the right:

Add '-0.04163265306' to each side of the equation.
0.04163265306 + -0.4081632653x + -0.04163265306 + x2 = 0 + -0.04163265306

Reorder the terms:
0.04163265306 + -0.04163265306 + -0.4081632653x + x2 = 0 + -0.04163265306

Combine like terms: 0.04163265306 + -0.04163265306 = 0.00000000000
0.00000000000 + -0.4081632653x + x2 = 0 + -0.04163265306
-0.4081632653x + x2 = 0 + -0.04163265306

Combine like terms: 0 + -0.04163265306 = -0.04163265306
-0.4081632653x + x2 = -0.04163265306

The x term is -0.4081632653x.  Take half its coefficient (-0.2040816327).
Square it (0.04164931281) and add it to both sides.

Add '0.04164931281' to each side of the equation.
-0.4081632653x + 0.04164931281 + x2 = -0.04163265306 + 0.04164931281

Reorder the terms:
0.04164931281 + -0.4081632653x + x2 = -0.04163265306 + 0.04164931281

Combine like terms: -0.04163265306 + 0.04164931281 = 0.00001665975
0.04164931281 + -0.4081632653x + x2 = 0.00001665975

Factor a perfect square on the left side:
(x + -0.2040816327)(x + -0.2040816327) = 0.00001665975

Calculate the square root of the right side: 0.004081636

Break this problem into two subproblems by setting 
(x + -0.2040816327) equal to 0.004081636 and -0.004081636.

Subproblem 1

x + -0.2040816327 = 0.004081636 Simplifying x + -0.2040816327 = 0.004081636 Reorder the terms: -0.2040816327 + x = 0.004081636 Solving -0.2040816327 + x = 0.004081636 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2040816327' to each side of the equation. -0.2040816327 + 0.2040816327 + x = 0.004081636 + 0.2040816327 Combine like terms: -0.2040816327 + 0.2040816327 = 0.0000000000 0.0000000000 + x = 0.004081636 + 0.2040816327 x = 0.004081636 + 0.2040816327 Combine like terms: 0.004081636 + 0.2040816327 = 0.2081632687 x = 0.2081632687 Simplifying x = 0.2081632687

Subproblem 2

x + -0.2040816327 = -0.004081636 Simplifying x + -0.2040816327 = -0.004081636 Reorder the terms: -0.2040816327 + x = -0.004081636 Solving -0.2040816327 + x = -0.004081636 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2040816327' to each side of the equation. -0.2040816327 + 0.2040816327 + x = -0.004081636 + 0.2040816327 Combine like terms: -0.2040816327 + 0.2040816327 = 0.0000000000 0.0000000000 + x = -0.004081636 + 0.2040816327 x = -0.004081636 + 0.2040816327 Combine like terms: -0.004081636 + 0.2040816327 = 0.1999999967 x = 0.1999999967 Simplifying x = 0.1999999967

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.2081632687, 0.1999999967}

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