(w+11)(w)=130

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Solution for (w+11)(w)=130 equation:


Simplifying
(w + 11)(w) = 130

Reorder the terms:
(11 + w)(w) = 130

Reorder the terms for easier multiplication:
w(11 + w) = 130
(11 * w + w * w) = 130
(11w + w2) = 130

Solving
11w + w2 = 130

Solving for variable 'w'.

Reorder the terms:
-130 + 11w + w2 = 130 + -130

Combine like terms: 130 + -130 = 0
-130 + 11w + w2 = 0

Begin completing the square.

Move the constant term to the right:

Add '130' to each side of the equation.
-130 + 11w + 130 + w2 = 0 + 130

Reorder the terms:
-130 + 130 + 11w + w2 = 0 + 130

Combine like terms: -130 + 130 = 0
0 + 11w + w2 = 0 + 130
11w + w2 = 0 + 130

Combine like terms: 0 + 130 = 130
11w + w2 = 130

The w term is 11w.  Take half its coefficient (5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
11w + 30.25 + w2 = 130 + 30.25

Reorder the terms:
30.25 + 11w + w2 = 130 + 30.25

Combine like terms: 130 + 30.25 = 160.25
30.25 + 11w + w2 = 160.25

Factor a perfect square on the left side:
(w + 5.5)(w + 5.5) = 160.25

Calculate the square root of the right side: 12.658988901

Break this problem into two subproblems by setting 
(w + 5.5) equal to 12.658988901 and -12.658988901.

Subproblem 1

w + 5.5 = 12.658988901 Simplifying w + 5.5 = 12.658988901 Reorder the terms: 5.5 + w = 12.658988901 Solving 5.5 + w = 12.658988901 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + w = 12.658988901 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + w = 12.658988901 + -5.5 w = 12.658988901 + -5.5 Combine like terms: 12.658988901 + -5.5 = 7.158988901 w = 7.158988901 Simplifying w = 7.158988901

Subproblem 2

w + 5.5 = -12.658988901 Simplifying w + 5.5 = -12.658988901 Reorder the terms: 5.5 + w = -12.658988901 Solving 5.5 + w = -12.658988901 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-5.5' to each side of the equation. 5.5 + -5.5 + w = -12.658988901 + -5.5 Combine like terms: 5.5 + -5.5 = 0.0 0.0 + w = -12.658988901 + -5.5 w = -12.658988901 + -5.5 Combine like terms: -12.658988901 + -5.5 = -18.158988901 w = -18.158988901 Simplifying w = -18.158988901

Solution

The solution to the problem is based on the solutions from the subproblems. w = {7.158988901, -18.158988901}

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