25w^2-20w+1=0

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Solution for 25w^2-20w+1=0 equation:


Simplifying
25w2 + -20w + 1 = 0

Reorder the terms:
1 + -20w + 25w2 = 0

Solving
1 + -20w + 25w2 = 0

Solving for variable 'w'.

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

Divide each side by '25'.
0.04 + -0.8w + w2 = 0

Move the constant term to the right:

Add '-0.04' to each side of the equation.
0.04 + -0.8w + -0.04 + w2 = 0 + -0.04

Reorder the terms:
0.04 + -0.04 + -0.8w + w2 = 0 + -0.04

Combine like terms: 0.04 + -0.04 = 0.00
0.00 + -0.8w + w2 = 0 + -0.04
-0.8w + w2 = 0 + -0.04

Combine like terms: 0 + -0.04 = -0.04
-0.8w + w2 = -0.04

The w term is -0.8w.  Take half its coefficient (-0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
-0.8w + 0.16 + w2 = -0.04 + 0.16

Reorder the terms:
0.16 + -0.8w + w2 = -0.04 + 0.16

Combine like terms: -0.04 + 0.16 = 0.12
0.16 + -0.8w + w2 = 0.12

Factor a perfect square on the left side:
(w + -0.4)(w + -0.4) = 0.12

Calculate the square root of the right side: 0.346410162

Break this problem into two subproblems by setting 
(w + -0.4) equal to 0.346410162 and -0.346410162.

Subproblem 1

w + -0.4 = 0.346410162 Simplifying w + -0.4 = 0.346410162 Reorder the terms: -0.4 + w = 0.346410162 Solving -0.4 + w = 0.346410162 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + w = 0.346410162 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + w = 0.346410162 + 0.4 w = 0.346410162 + 0.4 Combine like terms: 0.346410162 + 0.4 = 0.746410162 w = 0.746410162 Simplifying w = 0.746410162

Subproblem 2

w + -0.4 = -0.346410162 Simplifying w + -0.4 = -0.346410162 Reorder the terms: -0.4 + w = -0.346410162 Solving -0.4 + w = -0.346410162 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + w = -0.346410162 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + w = -0.346410162 + 0.4 w = -0.346410162 + 0.4 Combine like terms: -0.346410162 + 0.4 = 0.053589838 w = 0.053589838 Simplifying w = 0.053589838

Solution

The solution to the problem is based on the solutions from the subproblems. w = {0.746410162, 0.053589838}

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