0=-w^2+25w+500

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Solution for 0=-w^2+25w+500 equation:


Simplifying
0 = -1w2 + 25w + 500

Reorder the terms:
0 = 500 + 25w + -1w2

Solving
0 = 500 + 25w + -1w2

Solving for variable 'w'.

Combine like terms: 0 + -500 = -500
-500 + -25w + w2 = 500 + 25w + -1w2 + -500 + -25w + w2

Reorder the terms:
-500 + -25w + w2 = 500 + -500 + 25w + -25w + -1w2 + w2

Combine like terms: 500 + -500 = 0
-500 + -25w + w2 = 0 + 25w + -25w + -1w2 + w2
-500 + -25w + w2 = 25w + -25w + -1w2 + w2

Combine like terms: 25w + -25w = 0
-500 + -25w + w2 = 0 + -1w2 + w2
-500 + -25w + w2 = -1w2 + w2

Combine like terms: -1w2 + w2 = 0
-500 + -25w + w2 = 0

Begin completing the square.

Move the constant term to the right:

Add '500' to each side of the equation.
-500 + -25w + 500 + w2 = 0 + 500

Reorder the terms:
-500 + 500 + -25w + w2 = 0 + 500

Combine like terms: -500 + 500 = 0
0 + -25w + w2 = 0 + 500
-25w + w2 = 0 + 500

Combine like terms: 0 + 500 = 500
-25w + w2 = 500

The w term is -25w.  Take half its coefficient (-12.5).
Square it (156.25) and add it to both sides.

Add '156.25' to each side of the equation.
-25w + 156.25 + w2 = 500 + 156.25

Reorder the terms:
156.25 + -25w + w2 = 500 + 156.25

Combine like terms: 500 + 156.25 = 656.25
156.25 + -25w + w2 = 656.25

Factor a perfect square on the left side:
(w + -12.5)(w + -12.5) = 656.25

Calculate the square root of the right side: 25.617376915

Break this problem into two subproblems by setting 
(w + -12.5) equal to 25.617376915 and -25.617376915.

Subproblem 1

w + -12.5 = 25.617376915 Simplifying w + -12.5 = 25.617376915 Reorder the terms: -12.5 + w = 25.617376915 Solving -12.5 + w = 25.617376915 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '12.5' to each side of the equation. -12.5 + 12.5 + w = 25.617376915 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + w = 25.617376915 + 12.5 w = 25.617376915 + 12.5 Combine like terms: 25.617376915 + 12.5 = 38.117376915 w = 38.117376915 Simplifying w = 38.117376915

Subproblem 2

w + -12.5 = -25.617376915 Simplifying w + -12.5 = -25.617376915 Reorder the terms: -12.5 + w = -25.617376915 Solving -12.5 + w = -25.617376915 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '12.5' to each side of the equation. -12.5 + 12.5 + w = -25.617376915 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + w = -25.617376915 + 12.5 w = -25.617376915 + 12.5 Combine like terms: -25.617376915 + 12.5 = -13.117376915 w = -13.117376915 Simplifying w = -13.117376915

Solution

The solution to the problem is based on the solutions from the subproblems. w = {38.117376915, -13.117376915}

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