2w^2-16w+30-w^2-25=0

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Solution for 2w^2-16w+30-w^2-25=0 equation:


Simplifying
2w2 + -16w + 30 + -1w2 + -25 = 0

Reorder the terms:
30 + -25 + -16w + 2w2 + -1w2 = 0

Combine like terms: 30 + -25 = 5
5 + -16w + 2w2 + -1w2 = 0

Combine like terms: 2w2 + -1w2 = 1w2
5 + -16w + 1w2 = 0

Solving
5 + -16w + 1w2 = 0

Solving for variable 'w'.

Begin completing the square.

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -16w + -5 + w2 = 0 + -5

Reorder the terms:
5 + -5 + -16w + w2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -16w + w2 = 0 + -5
-16w + w2 = 0 + -5

Combine like terms: 0 + -5 = -5
-16w + w2 = -5

The w term is -16w.  Take half its coefficient (-8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
-16w + 64 + w2 = -5 + 64

Reorder the terms:
64 + -16w + w2 = -5 + 64

Combine like terms: -5 + 64 = 59
64 + -16w + w2 = 59

Factor a perfect square on the left side:
(w + -8)(w + -8) = 59

Calculate the square root of the right side: 7.681145748

Break this problem into two subproblems by setting 
(w + -8) equal to 7.681145748 and -7.681145748.

Subproblem 1

w + -8 = 7.681145748 Simplifying w + -8 = 7.681145748 Reorder the terms: -8 + w = 7.681145748 Solving -8 + w = 7.681145748 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + w = 7.681145748 + 8 Combine like terms: -8 + 8 = 0 0 + w = 7.681145748 + 8 w = 7.681145748 + 8 Combine like terms: 7.681145748 + 8 = 15.681145748 w = 15.681145748 Simplifying w = 15.681145748

Subproblem 2

w + -8 = -7.681145748 Simplifying w + -8 = -7.681145748 Reorder the terms: -8 + w = -7.681145748 Solving -8 + w = -7.681145748 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + w = -7.681145748 + 8 Combine like terms: -8 + 8 = 0 0 + w = -7.681145748 + 8 w = -7.681145748 + 8 Combine like terms: -7.681145748 + 8 = 0.318854252 w = 0.318854252 Simplifying w = 0.318854252

Solution

The solution to the problem is based on the solutions from the subproblems. w = {15.681145748, 0.318854252}

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