(w+16)(w+8)=320

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Solution for (w+16)(w+8)=320 equation:


Simplifying
(w + 16)(w + 8) = 320

Reorder the terms:
(16 + w)(w + 8) = 320

Reorder the terms:
(16 + w)(8 + w) = 320

Multiply (16 + w) * (8 + w)
(16(8 + w) + w(8 + w)) = 320
((8 * 16 + w * 16) + w(8 + w)) = 320
((128 + 16w) + w(8 + w)) = 320
(128 + 16w + (8 * w + w * w)) = 320
(128 + 16w + (8w + w2)) = 320

Combine like terms: 16w + 8w = 24w
(128 + 24w + w2) = 320

Solving
128 + 24w + w2 = 320

Solving for variable 'w'.

Reorder the terms:
128 + -320 + 24w + w2 = 320 + -320

Combine like terms: 128 + -320 = -192
-192 + 24w + w2 = 320 + -320

Combine like terms: 320 + -320 = 0
-192 + 24w + w2 = 0

Begin completing the square.

Move the constant term to the right:

Add '192' to each side of the equation.
-192 + 24w + 192 + w2 = 0 + 192

Reorder the terms:
-192 + 192 + 24w + w2 = 0 + 192

Combine like terms: -192 + 192 = 0
0 + 24w + w2 = 0 + 192
24w + w2 = 0 + 192

Combine like terms: 0 + 192 = 192
24w + w2 = 192

The w term is 24w.  Take half its coefficient (12).
Square it (144) and add it to both sides.

Add '144' to each side of the equation.
24w + 144 + w2 = 192 + 144

Reorder the terms:
144 + 24w + w2 = 192 + 144

Combine like terms: 192 + 144 = 336
144 + 24w + w2 = 336

Factor a perfect square on the left side:
(w + 12)(w + 12) = 336

Calculate the square root of the right side: 18.33030278

Break this problem into two subproblems by setting 
(w + 12) equal to 18.33030278 and -18.33030278.

Subproblem 1

w + 12 = 18.33030278 Simplifying w + 12 = 18.33030278 Reorder the terms: 12 + w = 18.33030278 Solving 12 + w = 18.33030278 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + w = 18.33030278 + -12 Combine like terms: 12 + -12 = 0 0 + w = 18.33030278 + -12 w = 18.33030278 + -12 Combine like terms: 18.33030278 + -12 = 6.33030278 w = 6.33030278 Simplifying w = 6.33030278

Subproblem 2

w + 12 = -18.33030278 Simplifying w + 12 = -18.33030278 Reorder the terms: 12 + w = -18.33030278 Solving 12 + w = -18.33030278 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + w = -18.33030278 + -12 Combine like terms: 12 + -12 = 0 0 + w = -18.33030278 + -12 w = -18.33030278 + -12 Combine like terms: -18.33030278 + -12 = -30.33030278 w = -30.33030278 Simplifying w = -30.33030278

Solution

The solution to the problem is based on the solutions from the subproblems. w = {6.33030278, -30.33030278}

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