2w^2-11w-27=0

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Solution for 2w^2-11w-27=0 equation:


Simplifying
2w2 + -11w + -27 = 0

Reorder the terms:
-27 + -11w + 2w2 = 0

Solving
-27 + -11w + 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 + -5.5w + w2 = 0

Move the constant term to the right:

Add '13.5' to each side of the equation.
-13.5 + -5.5w + 13.5 + w2 = 0 + 13.5

Reorder the terms:
-13.5 + 13.5 + -5.5w + w2 = 0 + 13.5

Combine like terms: -13.5 + 13.5 = 0.0
0.0 + -5.5w + w2 = 0 + 13.5
-5.5w + w2 = 0 + 13.5

Combine like terms: 0 + 13.5 = 13.5
-5.5w + w2 = 13.5

The w term is -5.5w.  Take half its coefficient (-2.75).
Square it (7.5625) and add it to both sides.

Add '7.5625' to each side of the equation.
-5.5w + 7.5625 + w2 = 13.5 + 7.5625

Reorder the terms:
7.5625 + -5.5w + w2 = 13.5 + 7.5625

Combine like terms: 13.5 + 7.5625 = 21.0625
7.5625 + -5.5w + w2 = 21.0625

Factor a perfect square on the left side:
(w + -2.75)(w + -2.75) = 21.0625

Calculate the square root of the right side: 4.589389938

Break this problem into two subproblems by setting 
(w + -2.75) equal to 4.589389938 and -4.589389938.

Subproblem 1

w + -2.75 = 4.589389938 Simplifying w + -2.75 = 4.589389938 Reorder the terms: -2.75 + w = 4.589389938 Solving -2.75 + w = 4.589389938 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + w = 4.589389938 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + w = 4.589389938 + 2.75 w = 4.589389938 + 2.75 Combine like terms: 4.589389938 + 2.75 = 7.339389938 w = 7.339389938 Simplifying w = 7.339389938

Subproblem 2

w + -2.75 = -4.589389938 Simplifying w + -2.75 = -4.589389938 Reorder the terms: -2.75 + w = -4.589389938 Solving -2.75 + w = -4.589389938 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + w = -4.589389938 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + w = -4.589389938 + 2.75 w = -4.589389938 + 2.75 Combine like terms: -4.589389938 + 2.75 = -1.839389938 w = -1.839389938 Simplifying w = -1.839389938

Solution

The solution to the problem is based on the solutions from the subproblems. w = {7.339389938, -1.839389938}

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