0=w^2-2w-54

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Solution for 0=w^2-2w-54 equation:


Simplifying
0 = w2 + -2w + -54

Reorder the terms:
0 = -54 + -2w + w2

Solving
0 = -54 + -2w + w2

Solving for variable 'w'.

Combine like terms: 0 + 54 = 54
54 + 2w + -1w2 = -54 + -2w + w2 + 54 + 2w + -1w2

Reorder the terms:
54 + 2w + -1w2 = -54 + 54 + -2w + 2w + w2 + -1w2

Combine like terms: -54 + 54 = 0
54 + 2w + -1w2 = 0 + -2w + 2w + w2 + -1w2
54 + 2w + -1w2 = -2w + 2w + w2 + -1w2

Combine like terms: -2w + 2w = 0
54 + 2w + -1w2 = 0 + w2 + -1w2
54 + 2w + -1w2 = w2 + -1w2

Combine like terms: w2 + -1w2 = 0
54 + 2w + -1w2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-54 + -2w + w2 = 0

Move the constant term to the right:

Add '54' to each side of the equation.
-54 + -2w + 54 + w2 = 0 + 54

Reorder the terms:
-54 + 54 + -2w + w2 = 0 + 54

Combine like terms: -54 + 54 = 0
0 + -2w + w2 = 0 + 54
-2w + w2 = 0 + 54

Combine like terms: 0 + 54 = 54
-2w + w2 = 54

The w term is -2w.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2w + 1 + w2 = 54 + 1

Reorder the terms:
1 + -2w + w2 = 54 + 1

Combine like terms: 54 + 1 = 55
1 + -2w + w2 = 55

Factor a perfect square on the left side:
(w + -1)(w + -1) = 55

Calculate the square root of the right side: 7.416198487

Break this problem into two subproblems by setting 
(w + -1) equal to 7.416198487 and -7.416198487.

Subproblem 1

w + -1 = 7.416198487 Simplifying w + -1 = 7.416198487 Reorder the terms: -1 + w = 7.416198487 Solving -1 + w = 7.416198487 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + w = 7.416198487 + 1 Combine like terms: -1 + 1 = 0 0 + w = 7.416198487 + 1 w = 7.416198487 + 1 Combine like terms: 7.416198487 + 1 = 8.416198487 w = 8.416198487 Simplifying w = 8.416198487

Subproblem 2

w + -1 = -7.416198487 Simplifying w + -1 = -7.416198487 Reorder the terms: -1 + w = -7.416198487 Solving -1 + w = -7.416198487 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + w = -7.416198487 + 1 Combine like terms: -1 + 1 = 0 0 + w = -7.416198487 + 1 w = -7.416198487 + 1 Combine like terms: -7.416198487 + 1 = -6.416198487 w = -6.416198487 Simplifying w = -6.416198487

Solution

The solution to the problem is based on the solutions from the subproblems. w = {8.416198487, -6.416198487}

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