w^2+8.3w-73.6=0

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Solution for w^2+8.3w-73.6=0 equation:


Simplifying
w2 + 8.3w + -73.6 = 0

Reorder the terms:
-73.6 + 8.3w + w2 = 0

Solving
-73.6 + 8.3w + w2 = 0

Solving for variable 'w'.

Begin completing the square.

Move the constant term to the right:

Add '73.6' to each side of the equation.
-73.6 + 8.3w + 73.6 + w2 = 0 + 73.6

Reorder the terms:
-73.6 + 73.6 + 8.3w + w2 = 0 + 73.6

Combine like terms: -73.6 + 73.6 = 0.0
0.0 + 8.3w + w2 = 0 + 73.6
8.3w + w2 = 0 + 73.6

Combine like terms: 0 + 73.6 = 73.6
8.3w + w2 = 73.6

The w term is 8.3w.  Take half its coefficient (4.15).
Square it (17.2225) and add it to both sides.

Add '17.2225' to each side of the equation.
8.3w + 17.2225 + w2 = 73.6 + 17.2225

Reorder the terms:
17.2225 + 8.3w + w2 = 73.6 + 17.2225

Combine like terms: 73.6 + 17.2225 = 90.8225
17.2225 + 8.3w + w2 = 90.8225

Factor a perfect square on the left side:
(w + 4.15)(w + 4.15) = 90.8225

Calculate the square root of the right side: 9.530083945

Break this problem into two subproblems by setting 
(w + 4.15) equal to 9.530083945 and -9.530083945.

Subproblem 1

w + 4.15 = 9.530083945 Simplifying w + 4.15 = 9.530083945 Reorder the terms: 4.15 + w = 9.530083945 Solving 4.15 + w = 9.530083945 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-4.15' to each side of the equation. 4.15 + -4.15 + w = 9.530083945 + -4.15 Combine like terms: 4.15 + -4.15 = 0.00 0.00 + w = 9.530083945 + -4.15 w = 9.530083945 + -4.15 Combine like terms: 9.530083945 + -4.15 = 5.380083945 w = 5.380083945 Simplifying w = 5.380083945

Subproblem 2

w + 4.15 = -9.530083945 Simplifying w + 4.15 = -9.530083945 Reorder the terms: 4.15 + w = -9.530083945 Solving 4.15 + w = -9.530083945 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-4.15' to each side of the equation. 4.15 + -4.15 + w = -9.530083945 + -4.15 Combine like terms: 4.15 + -4.15 = 0.00 0.00 + w = -9.530083945 + -4.15 w = -9.530083945 + -4.15 Combine like terms: -9.530083945 + -4.15 = -13.680083945 w = -13.680083945 Simplifying w = -13.680083945

Solution

The solution to the problem is based on the solutions from the subproblems. w = {5.380083945, -13.680083945}

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