(2w-2)(w)=65

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Solution for (2w-2)(w)=65 equation:


Simplifying
(2w + -2)(w) = 65

Reorder the terms:
(-2 + 2w)(w) = 65

Reorder the terms for easier multiplication:
w(-2 + 2w) = 65
(-2 * w + 2w * w) = 65
(-2w + 2w2) = 65

Solving
-2w + 2w2 = 65

Solving for variable 'w'.

Reorder the terms:
-65 + -2w + 2w2 = 65 + -65

Combine like terms: 65 + -65 = 0
-65 + -2w + 2w2 = 0

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

Divide each side by '2'.
-32.5 + -1w + w2 = 0

Move the constant term to the right:

Add '32.5' to each side of the equation.
-32.5 + -1w + 32.5 + w2 = 0 + 32.5

Reorder the terms:
-32.5 + 32.5 + -1w + w2 = 0 + 32.5

Combine like terms: -32.5 + 32.5 = 0.0
0.0 + -1w + w2 = 0 + 32.5
-1w + w2 = 0 + 32.5

Combine like terms: 0 + 32.5 = 32.5
-1w + w2 = 32.5

The w term is -1w.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1w + 0.25 + w2 = 32.5 + 0.25

Reorder the terms:
0.25 + -1w + w2 = 32.5 + 0.25

Combine like terms: 32.5 + 0.25 = 32.75
0.25 + -1w + w2 = 32.75

Factor a perfect square on the left side:
(w + -0.5)(w + -0.5) = 32.75

Calculate the square root of the right side: 5.722761571

Break this problem into two subproblems by setting 
(w + -0.5) equal to 5.722761571 and -5.722761571.

Subproblem 1

w + -0.5 = 5.722761571 Simplifying w + -0.5 = 5.722761571 Reorder the terms: -0.5 + w = 5.722761571 Solving -0.5 + w = 5.722761571 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + w = 5.722761571 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + w = 5.722761571 + 0.5 w = 5.722761571 + 0.5 Combine like terms: 5.722761571 + 0.5 = 6.222761571 w = 6.222761571 Simplifying w = 6.222761571

Subproblem 2

w + -0.5 = -5.722761571 Simplifying w + -0.5 = -5.722761571 Reorder the terms: -0.5 + w = -5.722761571 Solving -0.5 + w = -5.722761571 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + w = -5.722761571 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + w = -5.722761571 + 0.5 w = -5.722761571 + 0.5 Combine like terms: -5.722761571 + 0.5 = -5.222761571 w = -5.222761571 Simplifying w = -5.222761571

Solution

The solution to the problem is based on the solutions from the subproblems. w = {6.222761571, -5.222761571}

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