w^2-16=8w

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Solution for w^2-16=8w equation:


Simplifying
w2 + -16 = 8w

Reorder the terms:
-16 + w2 = 8w

Solving
-16 + w2 = 8w

Solving for variable 'w'.

Reorder the terms:
-16 + -8w + w2 = 8w + -8w

Combine like terms: 8w + -8w = 0
-16 + -8w + w2 = 0

Begin completing the square.

Move the constant term to the right:

Add '16' to each side of the equation.
-16 + -8w + 16 + w2 = 0 + 16

Reorder the terms:
-16 + 16 + -8w + w2 = 0 + 16

Combine like terms: -16 + 16 = 0
0 + -8w + w2 = 0 + 16
-8w + w2 = 0 + 16

Combine like terms: 0 + 16 = 16
-8w + w2 = 16

The w term is -8w.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8w + 16 + w2 = 16 + 16

Reorder the terms:
16 + -8w + w2 = 16 + 16

Combine like terms: 16 + 16 = 32
16 + -8w + w2 = 32

Factor a perfect square on the left side:
(w + -4)(w + -4) = 32

Calculate the square root of the right side: 5.656854249

Break this problem into two subproblems by setting 
(w + -4) equal to 5.656854249 and -5.656854249.

Subproblem 1

w + -4 = 5.656854249 Simplifying w + -4 = 5.656854249 Reorder the terms: -4 + w = 5.656854249 Solving -4 + w = 5.656854249 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + w = 5.656854249 + 4 Combine like terms: -4 + 4 = 0 0 + w = 5.656854249 + 4 w = 5.656854249 + 4 Combine like terms: 5.656854249 + 4 = 9.656854249 w = 9.656854249 Simplifying w = 9.656854249

Subproblem 2

w + -4 = -5.656854249 Simplifying w + -4 = -5.656854249 Reorder the terms: -4 + w = -5.656854249 Solving -4 + w = -5.656854249 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + w = -5.656854249 + 4 Combine like terms: -4 + 4 = 0 0 + w = -5.656854249 + 4 w = -5.656854249 + 4 Combine like terms: -5.656854249 + 4 = -1.656854249 w = -1.656854249 Simplifying w = -1.656854249

Solution

The solution to the problem is based on the solutions from the subproblems. w = {9.656854249, -1.656854249}

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