-w^2-4w=-2

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Solution for -w^2-4w=-2 equation: 


Simplifying
-1w2 + -4w = -2

Reorder the terms:
-4w + -1w2 = -2

Solving
-4w + -1w2 = -2

Solving for variable 'w'.

Reorder the terms:
2 + -4w + -1w2 = -2 + 2

Combine like terms: -2 + 2 = 0
2 + -4w + -1w2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-2 + 4w + w2 = 0

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 4w + 2 + w2 = 0 + 2

Reorder the terms:
-2 + 2 + 4w + w2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 4w + w2 = 0 + 2
4w + w2 = 0 + 2

Combine like terms: 0 + 2 = 2
4w + w2 = 2

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 = 2 + 4

Reorder the terms:
4 + 4w + w2 = 2 + 4

Combine like terms: 2 + 4 = 6
4 + 4w + w2 = 6

Factor a perfect square on the left side:
(w + 2)(w + 2) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(w + 2) equal to 2.449489743 and -2.449489743.


Subproblem 1
w + 2 = 2.449489743

Simplifying
w + 2 = 2.449489743

Reorder the terms:
2 + w = 2.449489743

Solving
2 + w = 2.449489743

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 = 2.449489743 + -2

Combine like terms: 2 + -2 = 0
0 + w = 2.449489743 + -2
w = 2.449489743 + -2

Combine like terms: 2.449489743 + -2 = 0.449489743
w = 0.449489743

Simplifying
w = 0.449489743


Subproblem 2
w + 2 = -2.449489743

Simplifying
w + 2 = -2.449489743

Reorder the terms:
2 + w = -2.449489743

Solving
2 + w = -2.449489743

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 = -2.449489743 + -2

Combine like terms: 2 + -2 = 0
0 + w = -2.449489743 + -2
w = -2.449489743 + -2

Combine like terms: -2.449489743 + -2 = -4.449489743
w = -4.449489743

Simplifying
w = -4.449489743


Solution
The solution to the problem is based on the solutions
from the subproblems.
w = {0.449489743, -4.449489743}

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