110=w(w+15)

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Solution for 110=w(w+15) equation:


Simplifying
110 = w(w + 15)

Reorder the terms:
110 = w(15 + w)
110 = (15 * w + w * w)
110 = (15w + w2)

Solving
110 = 15w + w2

Solving for variable 'w'.

Reorder the terms:
110 + -15w + -1w2 = 15w + -15w + w2 + -1w2

Combine like terms: 15w + -15w = 0
110 + -15w + -1w2 = 0 + w2 + -1w2
110 + -15w + -1w2 = w2 + -1w2

Combine like terms: w2 + -1w2 = 0
110 + -15w + -1w2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-110 + 15w + w2 = 0

Move the constant term to the right:

Add '110' to each side of the equation.
-110 + 15w + 110 + w2 = 0 + 110

Reorder the terms:
-110 + 110 + 15w + w2 = 0 + 110

Combine like terms: -110 + 110 = 0
0 + 15w + w2 = 0 + 110
15w + w2 = 0 + 110

Combine like terms: 0 + 110 = 110
15w + w2 = 110

The w term is 15w.  Take half its coefficient (7.5).
Square it (56.25) and add it to both sides.

Add '56.25' to each side of the equation.
15w + 56.25 + w2 = 110 + 56.25

Reorder the terms:
56.25 + 15w + w2 = 110 + 56.25

Combine like terms: 110 + 56.25 = 166.25
56.25 + 15w + w2 = 166.25

Factor a perfect square on the left side:
(w + 7.5)(w + 7.5) = 166.25

Calculate the square root of the right side: 12.893796958

Break this problem into two subproblems by setting 
(w + 7.5) equal to 12.893796958 and -12.893796958.

Subproblem 1

w + 7.5 = 12.893796958 Simplifying w + 7.5 = 12.893796958 Reorder the terms: 7.5 + w = 12.893796958 Solving 7.5 + w = 12.893796958 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-7.5' to each side of the equation. 7.5 + -7.5 + w = 12.893796958 + -7.5 Combine like terms: 7.5 + -7.5 = 0.0 0.0 + w = 12.893796958 + -7.5 w = 12.893796958 + -7.5 Combine like terms: 12.893796958 + -7.5 = 5.393796958 w = 5.393796958 Simplifying w = 5.393796958

Subproblem 2

w + 7.5 = -12.893796958 Simplifying w + 7.5 = -12.893796958 Reorder the terms: 7.5 + w = -12.893796958 Solving 7.5 + w = -12.893796958 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-7.5' to each side of the equation. 7.5 + -7.5 + w = -12.893796958 + -7.5 Combine like terms: 7.5 + -7.5 = 0.0 0.0 + w = -12.893796958 + -7.5 w = -12.893796958 + -7.5 Combine like terms: -12.893796958 + -7.5 = -20.393796958 w = -20.393796958 Simplifying w = -20.393796958

Solution

The solution to the problem is based on the solutions from the subproblems. w = {5.393796958, -20.393796958}

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