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

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


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

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

Solving
0 = -50 + 50x + -4.9x2

Solving for variable 'x'.

Combine like terms: 0 + 50 = 50
50 + -50x + 4.9x2 = -50 + 50x + -4.9x2 + 50 + -50x + 4.9x2

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

Combine like terms: -50 + 50 = 0
50 + -50x + 4.9x2 = 0 + 50x + -50x + -4.9x2 + 4.9x2
50 + -50x + 4.9x2 = 50x + -50x + -4.9x2 + 4.9x2

Combine like terms: 50x + -50x = 0
50 + -50x + 4.9x2 = 0 + -4.9x2 + 4.9x2
50 + -50x + 4.9x2 = -4.9x2 + 4.9x2

Combine like terms: -4.9x2 + 4.9x2 = 0.0
50 + -50x + 4.9x2 = 0.0

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

Divide each side by '4.9'.
10.20408163 + -10.20408163x + x2 = 0

Move the constant term to the right:

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

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

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

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

The x term is -10.20408163x.  Take half its coefficient (-5.102040815).
Square it (26.03082048) and add it to both sides.

Add '26.03082048' to each side of the equation.
-10.20408163x + 26.03082048 + x2 = -10.20408163 + 26.03082048

Reorder the terms:
26.03082048 + -10.20408163x + x2 = -10.20408163 + 26.03082048

Combine like terms: -10.20408163 + 26.03082048 = 15.82673885
26.03082048 + -10.20408163x + x2 = 15.82673885

Factor a perfect square on the left side:
(x + -5.102040815)(x + -5.102040815) = 15.82673885

Calculate the square root of the right side: 3.978283405

Break this problem into two subproblems by setting 
(x + -5.102040815) equal to 3.978283405 and -3.978283405.

Subproblem 1

x + -5.102040815 = 3.978283405 Simplifying x + -5.102040815 = 3.978283405 Reorder the terms: -5.102040815 + x = 3.978283405 Solving -5.102040815 + x = 3.978283405 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.102040815' to each side of the equation. -5.102040815 + 5.102040815 + x = 3.978283405 + 5.102040815 Combine like terms: -5.102040815 + 5.102040815 = 0.000000000 0.000000000 + x = 3.978283405 + 5.102040815 x = 3.978283405 + 5.102040815 Combine like terms: 3.978283405 + 5.102040815 = 9.08032422 x = 9.08032422 Simplifying x = 9.08032422

Subproblem 2

x + -5.102040815 = -3.978283405 Simplifying x + -5.102040815 = -3.978283405 Reorder the terms: -5.102040815 + x = -3.978283405 Solving -5.102040815 + x = -3.978283405 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '5.102040815' to each side of the equation. -5.102040815 + 5.102040815 + x = -3.978283405 + 5.102040815 Combine like terms: -5.102040815 + 5.102040815 = 0.000000000 0.000000000 + x = -3.978283405 + 5.102040815 x = -3.978283405 + 5.102040815 Combine like terms: -3.978283405 + 5.102040815 = 1.12375741 x = 1.12375741 Simplifying x = 1.12375741

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.08032422, 1.12375741}

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