w^2-27w-126=0

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Solution for w^2-27w-126=0 equation:


Simplifying
w2 + -27w + -126 = 0

Reorder the terms:
-126 + -27w + w2 = 0

Solving
-126 + -27w + w2 = 0

Solving for variable 'w'.

Begin completing the square.

Move the constant term to the right:

Add '126' to each side of the equation.
-126 + -27w + 126 + w2 = 0 + 126

Reorder the terms:
-126 + 126 + -27w + w2 = 0 + 126

Combine like terms: -126 + 126 = 0
0 + -27w + w2 = 0 + 126
-27w + w2 = 0 + 126

Combine like terms: 0 + 126 = 126
-27w + w2 = 126

The w term is -27w.  Take half its coefficient (-13.5).
Square it (182.25) and add it to both sides.

Add '182.25' to each side of the equation.
-27w + 182.25 + w2 = 126 + 182.25

Reorder the terms:
182.25 + -27w + w2 = 126 + 182.25

Combine like terms: 126 + 182.25 = 308.25
182.25 + -27w + w2 = 308.25

Factor a perfect square on the left side:
(w + -13.5)(w + -13.5) = 308.25

Calculate the square root of the right side: 17.557049866

Break this problem into two subproblems by setting 
(w + -13.5) equal to 17.557049866 and -17.557049866.

Subproblem 1

w + -13.5 = 17.557049866 Simplifying w + -13.5 = 17.557049866 Reorder the terms: -13.5 + w = 17.557049866 Solving -13.5 + w = 17.557049866 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '13.5' to each side of the equation. -13.5 + 13.5 + w = 17.557049866 + 13.5 Combine like terms: -13.5 + 13.5 = 0.0 0.0 + w = 17.557049866 + 13.5 w = 17.557049866 + 13.5 Combine like terms: 17.557049866 + 13.5 = 31.057049866 w = 31.057049866 Simplifying w = 31.057049866

Subproblem 2

w + -13.5 = -17.557049866 Simplifying w + -13.5 = -17.557049866 Reorder the terms: -13.5 + w = -17.557049866 Solving -13.5 + w = -17.557049866 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '13.5' to each side of the equation. -13.5 + 13.5 + w = -17.557049866 + 13.5 Combine like terms: -13.5 + 13.5 = 0.0 0.0 + w = -17.557049866 + 13.5 w = -17.557049866 + 13.5 Combine like terms: -17.557049866 + 13.5 = -4.057049866 w = -4.057049866 Simplifying w = -4.057049866

Solution

The solution to the problem is based on the solutions from the subproblems. w = {31.057049866, -4.057049866}

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