4u^2-8u+2=0

Solution for 4u^2-8u+2=0 equation:

Simplifying
4u2 + -8u + 2 = 0

Reorder the terms:
2 + -8u + 4u2 = 0

Solving
2 + -8u + 4u2 = 0

Solving for variable 'u'.

Factor out the Greatest Common Factor (GCF), '2'.
2(1 + -4u + 2u2) = 0

Ignore the factor 2.
Subproblem 1
Set the factor '(1 + -4u + 2u2)' equal to zero and attempt to solve:

Simplifying
1 + -4u + 2u2 = 0

Solving
1 + -4u + 2u2 = 0

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

Divide each side by '2'.
0.5 + -2u + u2 = 0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + -2u + -0.5 + u2 = 0 + -0.5

Reorder the terms:
0.5 + -0.5 + -2u + u2 = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + -2u + u2 = 0 + -0.5
-2u + u2 = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
-2u + u2 = -0.5

The u term is -2u.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2u + 1 + u2 = -0.5 + 1

Reorder the terms:
1 + -2u + u2 = -0.5 + 1

Combine like terms: -0.5 + 1 = 0.5
1 + -2u + u2 = 0.5

Factor a perfect square on the left side:
(u + -1)(u + -1) = 0.5

Calculate the square root of the right side: 0.707106781

Break this problem into two subproblems by setting 
(u + -1) equal to 0.707106781 and -0.707106781.

Subproblem 1
u + -1 = 0.707106781

Simplifying
u + -1 = 0.707106781

Reorder the terms:
-1 + u = 0.707106781

Solving
-1 + u = 0.707106781

Solving for variable 'u'.

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

Add '1' to each side of the equation.
-1 + 1 + u = 0.707106781 + 1

Combine like terms: -1 + 1 = 0
0 + u = 0.707106781 + 1
u = 0.707106781 + 1

Combine like terms: 0.707106781 + 1 = 1.707106781
u = 1.707106781

Simplifying
u = 1.707106781

Subproblem 2
u + -1 = -0.707106781

Simplifying
u + -1 = -0.707106781

Reorder the terms:
-1 + u = -0.707106781

Solving
-1 + u = -0.707106781

Solving for variable 'u'.

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

Add '1' to each side of the equation.
-1 + 1 + u = -0.707106781 + 1

Combine like terms: -1 + 1 = 0
0 + u = -0.707106781 + 1
u = -0.707106781 + 1

Combine like terms: -0.707106781 + 1 = 0.292893219
u = 0.292893219

Simplifying
u = 0.292893219

Solution
The solution to the problem is based on the solutions
from the subproblems.
u = {1.707106781, 0.292893219}
Solution
u = {1.707106781, 0.292893219}