-w^2+50w+800=0

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Solution for -w^2+50w+800=0 equation:


Simplifying
-1w2 + 50w + 800 = 0

Reorder the terms:
800 + 50w + -1w2 = 0

Solving
800 + 50w + -1w2 = 0

Solving for variable 'w'.

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

Divide each side by '-1'.
-800 + -50w + w2 = 0

Move the constant term to the right:

Add '800' to each side of the equation.
-800 + -50w + 800 + w2 = 0 + 800

Reorder the terms:
-800 + 800 + -50w + w2 = 0 + 800

Combine like terms: -800 + 800 = 0
0 + -50w + w2 = 0 + 800
-50w + w2 = 0 + 800

Combine like terms: 0 + 800 = 800
-50w + w2 = 800

The w term is -50w.  Take half its coefficient (-25).
Square it (625) and add it to both sides.

Add '625' to each side of the equation.
-50w + 625 + w2 = 800 + 625

Reorder the terms:
625 + -50w + w2 = 800 + 625

Combine like terms: 800 + 625 = 1425
625 + -50w + w2 = 1425

Factor a perfect square on the left side:
(w + -25)(w + -25) = 1425

Calculate the square root of the right side: 37.749172176

Break this problem into two subproblems by setting 
(w + -25) equal to 37.749172176 and -37.749172176.

Subproblem 1

w + -25 = 37.749172176 Simplifying w + -25 = 37.749172176 Reorder the terms: -25 + w = 37.749172176 Solving -25 + w = 37.749172176 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '25' to each side of the equation. -25 + 25 + w = 37.749172176 + 25 Combine like terms: -25 + 25 = 0 0 + w = 37.749172176 + 25 w = 37.749172176 + 25 Combine like terms: 37.749172176 + 25 = 62.749172176 w = 62.749172176 Simplifying w = 62.749172176

Subproblem 2

w + -25 = -37.749172176 Simplifying w + -25 = -37.749172176 Reorder the terms: -25 + w = -37.749172176 Solving -25 + w = -37.749172176 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '25' to each side of the equation. -25 + 25 + w = -37.749172176 + 25 Combine like terms: -25 + 25 = 0 0 + w = -37.749172176 + 25 w = -37.749172176 + 25 Combine like terms: -37.749172176 + 25 = -12.749172176 w = -12.749172176 Simplifying w = -12.749172176

Solution

The solution to the problem is based on the solutions from the subproblems. w = {62.749172176, -12.749172176}

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