(8+2w)(13+2w)=163

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Solution for (8+2w)(13+2w)=163 equation:


Simplifying
(8 + 2w)(13 + 2w) = 163

Multiply (8 + 2w) * (13 + 2w)
(8(13 + 2w) + 2w * (13 + 2w)) = 163
((13 * 8 + 2w * 8) + 2w * (13 + 2w)) = 163
((104 + 16w) + 2w * (13 + 2w)) = 163
(104 + 16w + (13 * 2w + 2w * 2w)) = 163
(104 + 16w + (26w + 4w2)) = 163

Combine like terms: 16w + 26w = 42w
(104 + 42w + 4w2) = 163

Solving
104 + 42w + 4w2 = 163

Solving for variable 'w'.

Reorder the terms:
104 + -163 + 42w + 4w2 = 163 + -163

Combine like terms: 104 + -163 = -59
-59 + 42w + 4w2 = 163 + -163

Combine like terms: 163 + -163 = 0
-59 + 42w + 4w2 = 0

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

Divide each side by '4'.
-14.75 + 10.5w + w2 = 0

Move the constant term to the right:

Add '14.75' to each side of the equation.
-14.75 + 10.5w + 14.75 + w2 = 0 + 14.75

Reorder the terms:
-14.75 + 14.75 + 10.5w + w2 = 0 + 14.75

Combine like terms: -14.75 + 14.75 = 0.00
0.00 + 10.5w + w2 = 0 + 14.75
10.5w + w2 = 0 + 14.75

Combine like terms: 0 + 14.75 = 14.75
10.5w + w2 = 14.75

The w term is 10.5w.  Take half its coefficient (5.25).
Square it (27.5625) and add it to both sides.

Add '27.5625' to each side of the equation.
10.5w + 27.5625 + w2 = 14.75 + 27.5625

Reorder the terms:
27.5625 + 10.5w + w2 = 14.75 + 27.5625

Combine like terms: 14.75 + 27.5625 = 42.3125
27.5625 + 10.5w + w2 = 42.3125

Factor a perfect square on the left side:
(w + 5.25)(w + 5.25) = 42.3125

Calculate the square root of the right side: 6.504805916

Break this problem into two subproblems by setting 
(w + 5.25) equal to 6.504805916 and -6.504805916.

Subproblem 1

w + 5.25 = 6.504805916 Simplifying w + 5.25 = 6.504805916 Reorder the terms: 5.25 + w = 6.504805916 Solving 5.25 + w = 6.504805916 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-5.25' to each side of the equation. 5.25 + -5.25 + w = 6.504805916 + -5.25 Combine like terms: 5.25 + -5.25 = 0.00 0.00 + w = 6.504805916 + -5.25 w = 6.504805916 + -5.25 Combine like terms: 6.504805916 + -5.25 = 1.254805916 w = 1.254805916 Simplifying w = 1.254805916

Subproblem 2

w + 5.25 = -6.504805916 Simplifying w + 5.25 = -6.504805916 Reorder the terms: 5.25 + w = -6.504805916 Solving 5.25 + w = -6.504805916 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-5.25' to each side of the equation. 5.25 + -5.25 + w = -6.504805916 + -5.25 Combine like terms: 5.25 + -5.25 = 0.00 0.00 + w = -6.504805916 + -5.25 w = -6.504805916 + -5.25 Combine like terms: -6.504805916 + -5.25 = -11.754805916 w = -11.754805916 Simplifying w = -11.754805916

Solution

The solution to the problem is based on the solutions from the subproblems. w = {1.254805916, -11.754805916}

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