94=8w+5w^2

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Solution for 94=8w+5w^2 equation:


Simplifying
94 = 8w + 5w2

Solving
94 = 8w + 5w2

Solving for variable 'w'.

Reorder the terms:
94 + -8w + -5w2 = 8w + -8w + 5w2 + -5w2

Combine like terms: 8w + -8w = 0
94 + -8w + -5w2 = 0 + 5w2 + -5w2
94 + -8w + -5w2 = 5w2 + -5w2

Combine like terms: 5w2 + -5w2 = 0
94 + -8w + -5w2 = 0

Begin completing the square.  Divide all terms by
-5 the coefficient of the squared term: 

Divide each side by '-5'.
-18.8 + 1.6w + w2 = 0

Move the constant term to the right:

Add '18.8' to each side of the equation.
-18.8 + 1.6w + 18.8 + w2 = 0 + 18.8

Reorder the terms:
-18.8 + 18.8 + 1.6w + w2 = 0 + 18.8

Combine like terms: -18.8 + 18.8 = 0.0
0.0 + 1.6w + w2 = 0 + 18.8
1.6w + w2 = 0 + 18.8

Combine like terms: 0 + 18.8 = 18.8
1.6w + w2 = 18.8

The w term is 1.6w.  Take half its coefficient (0.8).
Square it (0.64) and add it to both sides.

Add '0.64' to each side of the equation.
1.6w + 0.64 + w2 = 18.8 + 0.64

Reorder the terms:
0.64 + 1.6w + w2 = 18.8 + 0.64

Combine like terms: 18.8 + 0.64 = 19.44
0.64 + 1.6w + w2 = 19.44

Factor a perfect square on the left side:
(w + 0.8)(w + 0.8) = 19.44

Calculate the square root of the right side: 4.409081537

Break this problem into two subproblems by setting 
(w + 0.8) equal to 4.409081537 and -4.409081537.

Subproblem 1

w + 0.8 = 4.409081537 Simplifying w + 0.8 = 4.409081537 Reorder the terms: 0.8 + w = 4.409081537 Solving 0.8 + w = 4.409081537 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-0.8' to each side of the equation. 0.8 + -0.8 + w = 4.409081537 + -0.8 Combine like terms: 0.8 + -0.8 = 0.0 0.0 + w = 4.409081537 + -0.8 w = 4.409081537 + -0.8 Combine like terms: 4.409081537 + -0.8 = 3.609081537 w = 3.609081537 Simplifying w = 3.609081537

Subproblem 2

w + 0.8 = -4.409081537 Simplifying w + 0.8 = -4.409081537 Reorder the terms: 0.8 + w = -4.409081537 Solving 0.8 + w = -4.409081537 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-0.8' to each side of the equation. 0.8 + -0.8 + w = -4.409081537 + -0.8 Combine like terms: 0.8 + -0.8 = 0.0 0.0 + w = -4.409081537 + -0.8 w = -4.409081537 + -0.8 Combine like terms: -4.409081537 + -0.8 = -5.209081537 w = -5.209081537 Simplifying w = -5.209081537

Solution

The solution to the problem is based on the solutions from the subproblems. w = {3.609081537, -5.209081537}

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