396=13+2w(17+2w)

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Solution for 396=13+2w(17+2w) equation:


Simplifying
396 = 13 + 2w(17 + 2w)
396 = 13 + (17 * 2w + 2w * 2w)
396 = 13 + (34w + 4w2)

Solving
396 = 13 + 34w + 4w2

Solving for variable 'w'.

Combine like terms: 396 + -13 = 383
383 + -34w + -4w2 = 13 + 34w + 4w2 + -13 + -34w + -4w2

Reorder the terms:
383 + -34w + -4w2 = 13 + -13 + 34w + -34w + 4w2 + -4w2

Combine like terms: 13 + -13 = 0
383 + -34w + -4w2 = 0 + 34w + -34w + 4w2 + -4w2
383 + -34w + -4w2 = 34w + -34w + 4w2 + -4w2

Combine like terms: 34w + -34w = 0
383 + -34w + -4w2 = 0 + 4w2 + -4w2
383 + -34w + -4w2 = 4w2 + -4w2

Combine like terms: 4w2 + -4w2 = 0
383 + -34w + -4w2 = 0

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

Divide each side by '-4'.
-95.75 + 8.5w + w2 = 0

Move the constant term to the right:

Add '95.75' to each side of the equation.
-95.75 + 8.5w + 95.75 + w2 = 0 + 95.75

Reorder the terms:
-95.75 + 95.75 + 8.5w + w2 = 0 + 95.75

Combine like terms: -95.75 + 95.75 = 0.00
0.00 + 8.5w + w2 = 0 + 95.75
8.5w + w2 = 0 + 95.75

Combine like terms: 0 + 95.75 = 95.75
8.5w + w2 = 95.75

The w term is 8.5w.  Take half its coefficient (4.25).
Square it (18.0625) and add it to both sides.

Add '18.0625' to each side of the equation.
8.5w + 18.0625 + w2 = 95.75 + 18.0625

Reorder the terms:
18.0625 + 8.5w + w2 = 95.75 + 18.0625

Combine like terms: 95.75 + 18.0625 = 113.8125
18.0625 + 8.5w + w2 = 113.8125

Factor a perfect square on the left side:
(w + 4.25)(w + 4.25) = 113.8125

Calculate the square root of the right side: 10.668294147

Break this problem into two subproblems by setting 
(w + 4.25) equal to 10.668294147 and -10.668294147.

Subproblem 1

w + 4.25 = 10.668294147 Simplifying w + 4.25 = 10.668294147 Reorder the terms: 4.25 + w = 10.668294147 Solving 4.25 + w = 10.668294147 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-4.25' to each side of the equation. 4.25 + -4.25 + w = 10.668294147 + -4.25 Combine like terms: 4.25 + -4.25 = 0.00 0.00 + w = 10.668294147 + -4.25 w = 10.668294147 + -4.25 Combine like terms: 10.668294147 + -4.25 = 6.418294147 w = 6.418294147 Simplifying w = 6.418294147

Subproblem 2

w + 4.25 = -10.668294147 Simplifying w + 4.25 = -10.668294147 Reorder the terms: 4.25 + w = -10.668294147 Solving 4.25 + w = -10.668294147 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-4.25' to each side of the equation. 4.25 + -4.25 + w = -10.668294147 + -4.25 Combine like terms: 4.25 + -4.25 = 0.00 0.00 + w = -10.668294147 + -4.25 w = -10.668294147 + -4.25 Combine like terms: -10.668294147 + -4.25 = -14.918294147 w = -14.918294147 Simplifying w = -14.918294147

Solution

The solution to the problem is based on the solutions from the subproblems. w = {6.418294147, -14.918294147}

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