5(w^2-2w+1)=4

Solution for 5(w^2-2w+1)=4 equation:

Simplifying
5(w2 + -2w + 1) = 4

Reorder the terms:
5(1 + -2w + w2) = 4
(1 * 5 + -2w * 5 + w2 * 5) = 4
(5 + -10w + 5w2) = 4

Solving
5 + -10w + 5w2 = 4

Solving for variable 'w'.

Reorder the terms:
5 + -4 + -10w + 5w2 = 4 + -4

Combine like terms: 5 + -4 = 1
1 + -10w + 5w2 = 4 + -4

Combine like terms: 4 + -4 = 0
1 + -10w + 5w2 = 0

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

Divide each side by '5'.
0.2 + -2w + w2 = 0

Move the constant term to the right:

Add '-0.2' to each side of the equation.
0.2 + -2w + -0.2 + w2 = 0 + -0.2

Reorder the terms:
0.2 + -0.2 + -2w + w2 = 0 + -0.2

Combine like terms: 0.2 + -0.2 = 0.0
0.0 + -2w + w2 = 0 + -0.2
-2w + w2 = 0 + -0.2

Combine like terms: 0 + -0.2 = -0.2
-2w + w2 = -0.2

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

Add '1' to each side of the equation.
-2w + 1 + w2 = -0.2 + 1

Reorder the terms:
1 + -2w + w2 = -0.2 + 1

Combine like terms: -0.2 + 1 = 0.8
1 + -2w + w2 = 0.8

Factor a perfect square on the left side:
(w + -1)(w + -1) = 0.8

Calculate the square root of the right side: 0.894427191

Break this problem into two subproblems by setting 
(w + -1) equal to 0.894427191 and -0.894427191.

Subproblem 1
w + -1 = 0.894427191

Simplifying
w + -1 = 0.894427191

Reorder the terms:
-1 + w = 0.894427191

Solving
-1 + w = 0.894427191

Solving for variable 'w'.

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

Add '1' to each side of the equation.
-1 + 1 + w = 0.894427191 + 1

Combine like terms: -1 + 1 = 0
0 + w = 0.894427191 + 1
w = 0.894427191 + 1

Combine like terms: 0.894427191 + 1 = 1.894427191
w = 1.894427191

Simplifying
w = 1.894427191

Subproblem 2
w + -1 = -0.894427191

Simplifying
w + -1 = -0.894427191

Reorder the terms:
-1 + w = -0.894427191

Solving
-1 + w = -0.894427191

Solving for variable 'w'.

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

Add '1' to each side of the equation.
-1 + 1 + w = -0.894427191 + 1

Combine like terms: -1 + 1 = 0
0 + w = -0.894427191 + 1
w = -0.894427191 + 1

Combine like terms: -0.894427191 + 1 = 0.105572809
w = 0.105572809

Simplifying
w = 0.105572809

Solution
The solution to the problem is based on the solutions
from the subproblems.
w = {1.894427191, 0.105572809}