-4.9x^2-2x+50=0

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Solution for -4.9x^2-2x+50=0 equation:


Simplifying
-4.9x2 + -2x + 50 = 0

Reorder the terms:
50 + -2x + -4.9x2 = 0

Solving
50 + -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'.
-10.20408163 + 0.4081632653x + x2 = 0

Move the constant term to the right:

Add '10.20408163' to each side of the equation.
-10.20408163 + 0.4081632653x + 10.20408163 + x2 = 0 + 10.20408163

Reorder the terms:
-10.20408163 + 10.20408163 + 0.4081632653x + x2 = 0 + 10.20408163

Combine like terms: -10.20408163 + 10.20408163 = 0.00000000
0.00000000 + 0.4081632653x + x2 = 0 + 10.20408163
0.4081632653x + x2 = 0 + 10.20408163

Combine like terms: 0 + 10.20408163 = 10.20408163
0.4081632653x + x2 = 10.20408163

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 = 10.20408163 + 0.04164931281

Reorder the terms:
0.04164931281 + 0.4081632653x + x2 = 10.20408163 + 0.04164931281

Combine like terms: 10.20408163 + 0.04164931281 = 10.24573094281
0.04164931281 + 0.4081632653x + x2 = 10.24573094281

Factor a perfect square on the left side:
(x + 0.2040816327)(x + 0.2040816327) = 10.24573094281

Calculate the square root of the right side: 3.200895335

Break this problem into two subproblems by setting 
(x + 0.2040816327) equal to 3.200895335 and -3.200895335.

Subproblem 1

x + 0.2040816327 = 3.200895335 Simplifying x + 0.2040816327 = 3.200895335 Reorder the terms: 0.2040816327 + x = 3.200895335 Solving 0.2040816327 + x = 3.200895335 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 = 3.200895335 + -0.2040816327 Combine like terms: 0.2040816327 + -0.2040816327 = 0.0000000000 0.0000000000 + x = 3.200895335 + -0.2040816327 x = 3.200895335 + -0.2040816327 Combine like terms: 3.200895335 + -0.2040816327 = 2.9968137023 x = 2.9968137023 Simplifying x = 2.9968137023

Subproblem 2

x + 0.2040816327 = -3.200895335 Simplifying x + 0.2040816327 = -3.200895335 Reorder the terms: 0.2040816327 + x = -3.200895335 Solving 0.2040816327 + x = -3.200895335 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 = -3.200895335 + -0.2040816327 Combine like terms: 0.2040816327 + -0.2040816327 = 0.0000000000 0.0000000000 + x = -3.200895335 + -0.2040816327 x = -3.200895335 + -0.2040816327 Combine like terms: -3.200895335 + -0.2040816327 = -3.4049769677 x = -3.4049769677 Simplifying x = -3.4049769677

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.9968137023, -3.4049769677}

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