80000000000=2x^2-16x+104

Solution for 80000000000=2x^2-16x+104 equation:

Simplifying
80000000000 = 2x2 + -16x + 104

Reorder the terms:
80000000000 = 104 + -16x + 2x2

Solving
80000000000 = 104 + -16x + 2x2

Solving for variable 'x'.

Combine like terms: 80000000000 + -104 = 79999999896
79999999896 + 16x + -2x2 = 104 + -16x + 2x2 + -104 + 16x + -2x2

Reorder the terms:
79999999896 + 16x + -2x2 = 104 + -104 + -16x + 16x + 2x2 + -2x2

Combine like terms: 104 + -104 = 0
79999999896 + 16x + -2x2 = 0 + -16x + 16x + 2x2 + -2x2
79999999896 + 16x + -2x2 = -16x + 16x + 2x2 + -2x2

Combine like terms: -16x + 16x = 0
79999999896 + 16x + -2x2 = 0 + 2x2 + -2x2
79999999896 + 16x + -2x2 = 2x2 + -2x2

Combine like terms: 2x2 + -2x2 = 0
79999999896 + 16x + -2x2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(39999999950 + 8x + -1x2) = 0

Ignore the factor 2.
Subproblem 1
Set the factor '(39999999950 + 8x + -1x2)' equal to zero and attempt to solve:

Simplifying
39999999950 + 8x + -1x2 = 0

Solving
39999999950 + 8x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-39999999950 + -8x + x2 = 0

Move the constant term to the right:

Add '39999999950' to each side of the equation.
-39999999950 + -8x + 39999999950 + x2 = 0 + 39999999950

Reorder the terms:
-39999999950 + 39999999950 + -8x + x2 = 0 + 39999999950

Combine like terms: -39999999950 + 39999999950 = 0
0 + -8x + x2 = 0 + 39999999950
-8x + x2 = 0 + 39999999950

Combine like terms: 0 + 39999999950 = 39999999950
-8x + x2 = 39999999950

The x term is -8x.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8x + 16 + x2 = 39999999950 + 16

Reorder the terms:
16 + -8x + x2 = 39999999950 + 16

Combine like terms: 39999999950 + 16 = 39999999966
16 + -8x + x2 = 39999999966

Factor a perfect square on the left side:
(x + -4)(x + -4) = 39999999966

Calculate the square root of the right side: 199999.999915

Break this problem into two subproblems by setting 
(x + -4) equal to 199999.999915 and -199999.999915.

Subproblem 1
x + -4 = 199999.999915

Simplifying
x + -4 = 199999.999915

Reorder the terms:
-4 + x = 199999.999915

Solving
-4 + x = 199999.999915

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '4' to each side of the equation.
-4 + 4 + x = 199999.999915 + 4

Combine like terms: -4 + 4 = 0
0 + x = 199999.999915 + 4
x = 199999.999915 + 4

Combine like terms: 199999.999915 + 4 = 200003.999915
x = 200003.999915

Simplifying
x = 200003.999915

Subproblem 2
x + -4 = -199999.999915

Simplifying
x + -4 = -199999.999915

Reorder the terms:
-4 + x = -199999.999915

Solving
-4 + x = -199999.999915

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '4' to each side of the equation.
-4 + 4 + x = -199999.999915 + 4

Combine like terms: -4 + 4 = 0
0 + x = -199999.999915 + 4
x = -199999.999915 + 4

Combine like terms: -199999.999915 + 4 = -199995.999915
x = -199995.999915

Simplifying
x = -199995.999915

Solution
The solution to the problem is based on the solutions
from the subproblems.
x = {200003.999915, -199995.999915}
Solution
x = {200003.999915, -199995.999915}