w(w+180)=40

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Solution for w(w+180)=40 equation:


Simplifying
w(w + 180) = 40

Reorder the terms:
w(180 + w) = 40
(180 * w + w * w) = 40
(180w + w2) = 40

Solving
180w + w2 = 40

Solving for variable 'w'.

Reorder the terms:
-40 + 180w + w2 = 40 + -40

Combine like terms: 40 + -40 = 0
-40 + 180w + w2 = 0

Begin completing the square.

Move the constant term to the right:

Add '40' to each side of the equation.
-40 + 180w + 40 + w2 = 0 + 40

Reorder the terms:
-40 + 40 + 180w + w2 = 0 + 40

Combine like terms: -40 + 40 = 0
0 + 180w + w2 = 0 + 40
180w + w2 = 0 + 40

Combine like terms: 0 + 40 = 40
180w + w2 = 40

The w term is 180w.  Take half its coefficient (90).
Square it (8100) and add it to both sides.

Add '8100' to each side of the equation.
180w + 8100 + w2 = 40 + 8100

Reorder the terms:
8100 + 180w + w2 = 40 + 8100

Combine like terms: 40 + 8100 = 8140
8100 + 180w + w2 = 8140

Factor a perfect square on the left side:
(w + 90)(w + 90) = 8140

Calculate the square root of the right side: 90.221948549

Break this problem into two subproblems by setting 
(w + 90) equal to 90.221948549 and -90.221948549.

Subproblem 1

w + 90 = 90.221948549 Simplifying w + 90 = 90.221948549 Reorder the terms: 90 + w = 90.221948549 Solving 90 + w = 90.221948549 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-90' to each side of the equation. 90 + -90 + w = 90.221948549 + -90 Combine like terms: 90 + -90 = 0 0 + w = 90.221948549 + -90 w = 90.221948549 + -90 Combine like terms: 90.221948549 + -90 = 0.221948549 w = 0.221948549 Simplifying w = 0.221948549

Subproblem 2

w + 90 = -90.221948549 Simplifying w + 90 = -90.221948549 Reorder the terms: 90 + w = -90.221948549 Solving 90 + w = -90.221948549 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-90' to each side of the equation. 90 + -90 + w = -90.221948549 + -90 Combine like terms: 90 + -90 = 0 0 + w = -90.221948549 + -90 w = -90.221948549 + -90 Combine like terms: -90.221948549 + -90 = -180.221948549 w = -180.221948549 Simplifying w = -180.221948549

Solution

The solution to the problem is based on the solutions from the subproblems. w = {0.221948549, -180.221948549}

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