-0.1x^2+16x-100=0

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Solution for -0.1x^2+16x-100=0 equation:


Simplifying
-0.1x2 + 16x + -100 = 0

Reorder the terms:
-100 + 16x + -0.1x2 = 0

Solving
-100 + 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'.
1000 + -160x + x2 = 0

Move the constant term to the right:

Add '-1000' to each side of the equation.
1000 + -160x + -1000 + x2 = 0 + -1000

Reorder the terms:
1000 + -1000 + -160x + x2 = 0 + -1000

Combine like terms: 1000 + -1000 = 0
0 + -160x + x2 = 0 + -1000
-160x + x2 = 0 + -1000

Combine like terms: 0 + -1000 = -1000
-160x + x2 = -1000

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 = -1000 + 6400

Reorder the terms:
6400 + -160x + x2 = -1000 + 6400

Combine like terms: -1000 + 6400 = 5400
6400 + -160x + x2 = 5400

Factor a perfect square on the left side:
(x + -80)(x + -80) = 5400

Calculate the square root of the right side: 73.484692283

Break this problem into two subproblems by setting 
(x + -80) equal to 73.484692283 and -73.484692283.

Subproblem 1

x + -80 = 73.484692283 Simplifying x + -80 = 73.484692283 Reorder the terms: -80 + x = 73.484692283 Solving -80 + x = 73.484692283 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 = 73.484692283 + 80 Combine like terms: -80 + 80 = 0 0 + x = 73.484692283 + 80 x = 73.484692283 + 80 Combine like terms: 73.484692283 + 80 = 153.484692283 x = 153.484692283 Simplifying x = 153.484692283

Subproblem 2

x + -80 = -73.484692283 Simplifying x + -80 = -73.484692283 Reorder the terms: -80 + x = -73.484692283 Solving -80 + x = -73.484692283 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 = -73.484692283 + 80 Combine like terms: -80 + 80 = 0 0 + x = -73.484692283 + 80 x = -73.484692283 + 80 Combine like terms: -73.484692283 + 80 = 6.515307717 x = 6.515307717 Simplifying x = 6.515307717

Solution

The solution to the problem is based on the solutions from the subproblems. x = {153.484692283, 6.515307717}

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