0=w^2-14w+38

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Solution for 0=w^2-14w+38 equation:


Simplifying
0 = w2 + -14w + 38

Reorder the terms:
0 = 38 + -14w + w2

Solving
0 = 38 + -14w + w2

Solving for variable 'w'.

Combine like terms: 0 + -38 = -38
-38 + 14w + -1w2 = 38 + -14w + w2 + -38 + 14w + -1w2

Reorder the terms:
-38 + 14w + -1w2 = 38 + -38 + -14w + 14w + w2 + -1w2

Combine like terms: 38 + -38 = 0
-38 + 14w + -1w2 = 0 + -14w + 14w + w2 + -1w2
-38 + 14w + -1w2 = -14w + 14w + w2 + -1w2

Combine like terms: -14w + 14w = 0
-38 + 14w + -1w2 = 0 + w2 + -1w2
-38 + 14w + -1w2 = w2 + -1w2

Combine like terms: w2 + -1w2 = 0
-38 + 14w + -1w2 = 0

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

Divide each side by '-1'.
38 + -14w + w2 = 0

Move the constant term to the right:

Add '-38' to each side of the equation.
38 + -14w + -38 + w2 = 0 + -38

Reorder the terms:
38 + -38 + -14w + w2 = 0 + -38

Combine like terms: 38 + -38 = 0
0 + -14w + w2 = 0 + -38
-14w + w2 = 0 + -38

Combine like terms: 0 + -38 = -38
-14w + w2 = -38

The w term is -14w.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14w + 49 + w2 = -38 + 49

Reorder the terms:
49 + -14w + w2 = -38 + 49

Combine like terms: -38 + 49 = 11
49 + -14w + w2 = 11

Factor a perfect square on the left side:
(w + -7)(w + -7) = 11

Calculate the square root of the right side: 3.31662479

Break this problem into two subproblems by setting 
(w + -7) equal to 3.31662479 and -3.31662479.

Subproblem 1

w + -7 = 3.31662479 Simplifying w + -7 = 3.31662479 Reorder the terms: -7 + w = 3.31662479 Solving -7 + w = 3.31662479 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + w = 3.31662479 + 7 Combine like terms: -7 + 7 = 0 0 + w = 3.31662479 + 7 w = 3.31662479 + 7 Combine like terms: 3.31662479 + 7 = 10.31662479 w = 10.31662479 Simplifying w = 10.31662479

Subproblem 2

w + -7 = -3.31662479 Simplifying w + -7 = -3.31662479 Reorder the terms: -7 + w = -3.31662479 Solving -7 + w = -3.31662479 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + w = -3.31662479 + 7 Combine like terms: -7 + 7 = 0 0 + w = -3.31662479 + 7 w = -3.31662479 + 7 Combine like terms: -3.31662479 + 7 = 3.68337521 w = 3.68337521 Simplifying w = 3.68337521

Solution

The solution to the problem is based on the solutions from the subproblems. w = {10.31662479, 3.68337521}

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