2w^2-8w+1=w^2+25

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Solution for 2w^2-8w+1=w^2+25 equation:


Simplifying
2w2 + -8w + 1 = w2 + 25

Reorder the terms:
1 + -8w + 2w2 = w2 + 25

Reorder the terms:
1 + -8w + 2w2 = 25 + w2

Solving
1 + -8w + 2w2 = 25 + w2

Solving for variable 'w'.

Reorder the terms:
1 + -25 + -8w + 2w2 + -1w2 = 25 + w2 + -25 + -1w2

Combine like terms: 1 + -25 = -24
-24 + -8w + 2w2 + -1w2 = 25 + w2 + -25 + -1w2

Combine like terms: 2w2 + -1w2 = 1w2
-24 + -8w + 1w2 = 25 + w2 + -25 + -1w2

Reorder the terms:
-24 + -8w + 1w2 = 25 + -25 + w2 + -1w2

Combine like terms: 25 + -25 = 0
-24 + -8w + 1w2 = 0 + w2 + -1w2
-24 + -8w + 1w2 = w2 + -1w2

Combine like terms: w2 + -1w2 = 0
-24 + -8w + 1w2 = 0

Begin completing the square.

Move the constant term to the right:

Add '24' to each side of the equation.
-24 + -8w + 24 + w2 = 0 + 24

Reorder the terms:
-24 + 24 + -8w + w2 = 0 + 24

Combine like terms: -24 + 24 = 0
0 + -8w + w2 = 0 + 24
-8w + w2 = 0 + 24

Combine like terms: 0 + 24 = 24
-8w + w2 = 24

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 = 24 + 16

Reorder the terms:
16 + -8w + w2 = 24 + 16

Combine like terms: 24 + 16 = 40
16 + -8w + w2 = 40

Factor a perfect square on the left side:
(w + -4)(w + -4) = 40

Calculate the square root of the right side: 6.32455532

Break this problem into two subproblems by setting 
(w + -4) equal to 6.32455532 and -6.32455532.

Subproblem 1

w + -4 = 6.32455532 Simplifying w + -4 = 6.32455532 Reorder the terms: -4 + w = 6.32455532 Solving -4 + w = 6.32455532 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 = 6.32455532 + 4 Combine like terms: -4 + 4 = 0 0 + w = 6.32455532 + 4 w = 6.32455532 + 4 Combine like terms: 6.32455532 + 4 = 10.32455532 w = 10.32455532 Simplifying w = 10.32455532

Subproblem 2

w + -4 = -6.32455532 Simplifying w + -4 = -6.32455532 Reorder the terms: -4 + w = -6.32455532 Solving -4 + w = -6.32455532 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 = -6.32455532 + 4 Combine like terms: -4 + 4 = 0 0 + w = -6.32455532 + 4 w = -6.32455532 + 4 Combine like terms: -6.32455532 + 4 = -2.32455532 w = -2.32455532 Simplifying w = -2.32455532

Solution

The solution to the problem is based on the solutions from the subproblems. w = {10.32455532, -2.32455532}

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