w^2+4w-336=0

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Solution for w^2+4w-336=0 equation:


Simplifying
w2 + 4w + -336 = 0

Reorder the terms:
-336 + 4w + w2 = 0

Solving
-336 + 4w + w2 = 0

Solving for variable 'w'.

Begin completing the square.

Move the constant term to the right:

Add '336' to each side of the equation.
-336 + 4w + 336 + w2 = 0 + 336

Reorder the terms:
-336 + 336 + 4w + w2 = 0 + 336

Combine like terms: -336 + 336 = 0
0 + 4w + w2 = 0 + 336
4w + w2 = 0 + 336

Combine like terms: 0 + 336 = 336
4w + w2 = 336

The w term is 4w.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4w + 4 + w2 = 336 + 4

Reorder the terms:
4 + 4w + w2 = 336 + 4

Combine like terms: 336 + 4 = 340
4 + 4w + w2 = 340

Factor a perfect square on the left side:
(w + 2)(w + 2) = 340

Calculate the square root of the right side: 18.439088915

Break this problem into two subproblems by setting 
(w + 2) equal to 18.439088915 and -18.439088915.

Subproblem 1

w + 2 = 18.439088915 Simplifying w + 2 = 18.439088915 Reorder the terms: 2 + w = 18.439088915 Solving 2 + w = 18.439088915 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + w = 18.439088915 + -2 Combine like terms: 2 + -2 = 0 0 + w = 18.439088915 + -2 w = 18.439088915 + -2 Combine like terms: 18.439088915 + -2 = 16.439088915 w = 16.439088915 Simplifying w = 16.439088915

Subproblem 2

w + 2 = -18.439088915 Simplifying w + 2 = -18.439088915 Reorder the terms: 2 + w = -18.439088915 Solving 2 + w = -18.439088915 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + w = -18.439088915 + -2 Combine like terms: 2 + -2 = 0 0 + w = -18.439088915 + -2 w = -18.439088915 + -2 Combine like terms: -18.439088915 + -2 = -20.439088915 w = -20.439088915 Simplifying w = -20.439088915

Solution

The solution to the problem is based on the solutions from the subproblems. w = {16.439088915, -20.439088915}

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