2w^2-w-27=0

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Solution for 2w^2-w-27=0 equation:


Simplifying
2w2 + -1w + -27 = 0

Reorder the terms:
-27 + -1w + 2w2 = 0

Solving
-27 + -1w + 2w2 = 0

Solving for variable 'w'.

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

Divide each side by '2'.
-13.5 + -0.5w + w2 = 0

Move the constant term to the right:

Add '13.5' to each side of the equation.
-13.5 + -0.5w + 13.5 + w2 = 0 + 13.5

Reorder the terms:
-13.5 + 13.5 + -0.5w + w2 = 0 + 13.5

Combine like terms: -13.5 + 13.5 = 0.0
0.0 + -0.5w + w2 = 0 + 13.5
-0.5w + w2 = 0 + 13.5

Combine like terms: 0 + 13.5 = 13.5
-0.5w + w2 = 13.5

The w term is -0.5w.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5w + 0.0625 + w2 = 13.5 + 0.0625

Reorder the terms:
0.0625 + -0.5w + w2 = 13.5 + 0.0625

Combine like terms: 13.5 + 0.0625 = 13.5625
0.0625 + -0.5w + w2 = 13.5625

Factor a perfect square on the left side:
(w + -0.25)(w + -0.25) = 13.5625

Calculate the square root of the right side: 3.682729966

Break this problem into two subproblems by setting 
(w + -0.25) equal to 3.682729966 and -3.682729966.

Subproblem 1

w + -0.25 = 3.682729966 Simplifying w + -0.25 = 3.682729966 Reorder the terms: -0.25 + w = 3.682729966 Solving -0.25 + w = 3.682729966 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + w = 3.682729966 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + w = 3.682729966 + 0.25 w = 3.682729966 + 0.25 Combine like terms: 3.682729966 + 0.25 = 3.932729966 w = 3.932729966 Simplifying w = 3.932729966

Subproblem 2

w + -0.25 = -3.682729966 Simplifying w + -0.25 = -3.682729966 Reorder the terms: -0.25 + w = -3.682729966 Solving -0.25 + w = -3.682729966 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + w = -3.682729966 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + w = -3.682729966 + 0.25 w = -3.682729966 + 0.25 Combine like terms: -3.682729966 + 0.25 = -3.432729966 w = -3.432729966 Simplifying w = -3.432729966

Solution

The solution to the problem is based on the solutions from the subproblems. w = {3.932729966, -3.432729966}

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