-4.9x^2+-8x+850=0

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Solution for -4.9x^2+-8x+850=0 equation:


Simplifying
-4.9x2 + -8x + 850 = 0

Reorder the terms:
850 + -8x + -4.9x2 = 0

Solving
850 + -8x + -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'.
-173.4693878 + 1.632653061x + x2 = 0

Move the constant term to the right:

Add '173.4693878' to each side of the equation.
-173.4693878 + 1.632653061x + 173.4693878 + x2 = 0 + 173.4693878

Reorder the terms:
-173.4693878 + 173.4693878 + 1.632653061x + x2 = 0 + 173.4693878

Combine like terms: -173.4693878 + 173.4693878 = 0.0000000
0.0000000 + 1.632653061x + x2 = 0 + 173.4693878
1.632653061x + x2 = 0 + 173.4693878

Combine like terms: 0 + 173.4693878 = 173.4693878
1.632653061x + x2 = 173.4693878

The x term is 1.632653061x.  Take half its coefficient (0.8163265305).
Square it (0.6663890044) and add it to both sides.

Add '0.6663890044' to each side of the equation.
1.632653061x + 0.6663890044 + x2 = 173.4693878 + 0.6663890044

Reorder the terms:
0.6663890044 + 1.632653061x + x2 = 173.4693878 + 0.6663890044

Combine like terms: 173.4693878 + 0.6663890044 = 174.1357768044
0.6663890044 + 1.632653061x + x2 = 174.1357768044

Factor a perfect square on the left side:
(x + 0.8163265305)(x + 0.8163265305) = 174.1357768044

Calculate the square root of the right side: 13.196051561

Break this problem into two subproblems by setting 
(x + 0.8163265305) equal to 13.196051561 and -13.196051561.

Subproblem 1

x + 0.8163265305 = 13.196051561 Simplifying x + 0.8163265305 = 13.196051561 Reorder the terms: 0.8163265305 + x = 13.196051561 Solving 0.8163265305 + x = 13.196051561 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8163265305' to each side of the equation. 0.8163265305 + -0.8163265305 + x = 13.196051561 + -0.8163265305 Combine like terms: 0.8163265305 + -0.8163265305 = 0.0000000000 0.0000000000 + x = 13.196051561 + -0.8163265305 x = 13.196051561 + -0.8163265305 Combine like terms: 13.196051561 + -0.8163265305 = 12.3797250305 x = 12.3797250305 Simplifying x = 12.3797250305

Subproblem 2

x + 0.8163265305 = -13.196051561 Simplifying x + 0.8163265305 = -13.196051561 Reorder the terms: 0.8163265305 + x = -13.196051561 Solving 0.8163265305 + x = -13.196051561 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8163265305' to each side of the equation. 0.8163265305 + -0.8163265305 + x = -13.196051561 + -0.8163265305 Combine like terms: 0.8163265305 + -0.8163265305 = 0.0000000000 0.0000000000 + x = -13.196051561 + -0.8163265305 x = -13.196051561 + -0.8163265305 Combine like terms: -13.196051561 + -0.8163265305 = -14.0123780915 x = -14.0123780915 Simplifying x = -14.0123780915

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.3797250305, -14.0123780915}

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