-.1x^2+16x-50=0

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Solution for -.1x^2+16x-50=0 equation:


Simplifying
-0.1x2 + 16x + -50 = 0

Reorder the terms:
-50 + 16x + -0.1x2 = 0

Solving
-50 + 16x + -0.1x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-0.1 the coefficient of the squared term: 

Divide each side by '-0.1'.
500 + -160x + x2 = 0

Move the constant term to the right:

Add '-500' to each side of the equation.
500 + -160x + -500 + x2 = 0 + -500

Reorder the terms:
500 + -500 + -160x + x2 = 0 + -500

Combine like terms: 500 + -500 = 0
0 + -160x + x2 = 0 + -500
-160x + x2 = 0 + -500

Combine like terms: 0 + -500 = -500
-160x + x2 = -500

The x term is -160x.  Take half its coefficient (-80).
Square it (6400) and add it to both sides.

Add '6400' to each side of the equation.
-160x + 6400 + x2 = -500 + 6400

Reorder the terms:
6400 + -160x + x2 = -500 + 6400

Combine like terms: -500 + 6400 = 5900
6400 + -160x + x2 = 5900

Factor a perfect square on the left side:
(x + -80)(x + -80) = 5900

Calculate the square root of the right side: 76.811457479

Break this problem into two subproblems by setting 
(x + -80) equal to 76.811457479 and -76.811457479.

Subproblem 1

x + -80 = 76.811457479 Simplifying x + -80 = 76.811457479 Reorder the terms: -80 + x = 76.811457479 Solving -80 + x = 76.811457479 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '80' to each side of the equation. -80 + 80 + x = 76.811457479 + 80 Combine like terms: -80 + 80 = 0 0 + x = 76.811457479 + 80 x = 76.811457479 + 80 Combine like terms: 76.811457479 + 80 = 156.811457479 x = 156.811457479 Simplifying x = 156.811457479

Subproblem 2

x + -80 = -76.811457479 Simplifying x + -80 = -76.811457479 Reorder the terms: -80 + x = -76.811457479 Solving -80 + x = -76.811457479 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '80' to each side of the equation. -80 + 80 + x = -76.811457479 + 80 Combine like terms: -80 + 80 = 0 0 + x = -76.811457479 + 80 x = -76.811457479 + 80 Combine like terms: -76.811457479 + 80 = 3.188542521 x = 3.188542521 Simplifying x = 3.188542521

Solution

The solution to the problem is based on the solutions from the subproblems. x = {156.811457479, 3.188542521}

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