w(w+5)=238

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Solution for w(w+5)=238 equation:


Simplifying
w(w + 5) = 238

Reorder the terms:
w(5 + w) = 238
(5 * w + w * w) = 238
(5w + w2) = 238

Solving
5w + w2 = 238

Solving for variable 'w'.

Reorder the terms:
-238 + 5w + w2 = 238 + -238

Combine like terms: 238 + -238 = 0
-238 + 5w + w2 = 0

Begin completing the square.

Move the constant term to the right:

Add '238' to each side of the equation.
-238 + 5w + 238 + w2 = 0 + 238

Reorder the terms:
-238 + 238 + 5w + w2 = 0 + 238

Combine like terms: -238 + 238 = 0
0 + 5w + w2 = 0 + 238
5w + w2 = 0 + 238

Combine like terms: 0 + 238 = 238
5w + w2 = 238

The w term is 5w.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5w + 6.25 + w2 = 238 + 6.25

Reorder the terms:
6.25 + 5w + w2 = 238 + 6.25

Combine like terms: 238 + 6.25 = 244.25
6.25 + 5w + w2 = 244.25

Factor a perfect square on the left side:
(w + 2.5)(w + 2.5) = 244.25

Calculate the square root of the right side: 15.628499608

Break this problem into two subproblems by setting 
(w + 2.5) equal to 15.628499608 and -15.628499608.

Subproblem 1

w + 2.5 = 15.628499608 Simplifying w + 2.5 = 15.628499608 Reorder the terms: 2.5 + w = 15.628499608 Solving 2.5 + w = 15.628499608 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + w = 15.628499608 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + w = 15.628499608 + -2.5 w = 15.628499608 + -2.5 Combine like terms: 15.628499608 + -2.5 = 13.128499608 w = 13.128499608 Simplifying w = 13.128499608

Subproblem 2

w + 2.5 = -15.628499608 Simplifying w + 2.5 = -15.628499608 Reorder the terms: 2.5 + w = -15.628499608 Solving 2.5 + w = -15.628499608 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + w = -15.628499608 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + w = -15.628499608 + -2.5 w = -15.628499608 + -2.5 Combine like terms: -15.628499608 + -2.5 = -18.128499608 w = -18.128499608 Simplifying w = -18.128499608

Solution

The solution to the problem is based on the solutions from the subproblems. w = {13.128499608, -18.128499608}

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