w^2-14w=47

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Solution for w^2-14w=47 equation:


Simplifying
w2 + -14w = 47

Reorder the terms:
-14w + w2 = 47

Solving
-14w + w2 = 47

Solving for variable 'w'.

Reorder the terms:
-47 + -14w + w2 = 47 + -47

Combine like terms: 47 + -47 = 0
-47 + -14w + w2 = 0

Begin completing the square.

Move the constant term to the right:

Add '47' to each side of the equation.
-47 + -14w + 47 + w2 = 0 + 47

Reorder the terms:
-47 + 47 + -14w + w2 = 0 + 47

Combine like terms: -47 + 47 = 0
0 + -14w + w2 = 0 + 47
-14w + w2 = 0 + 47

Combine like terms: 0 + 47 = 47
-14w + w2 = 47

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 = 47 + 49

Reorder the terms:
49 + -14w + w2 = 47 + 49

Combine like terms: 47 + 49 = 96
49 + -14w + w2 = 96

Factor a perfect square on the left side:
(w + -7)(w + -7) = 96

Calculate the square root of the right side: 9.797958971

Break this problem into two subproblems by setting 
(w + -7) equal to 9.797958971 and -9.797958971.

Subproblem 1

w + -7 = 9.797958971 Simplifying w + -7 = 9.797958971 Reorder the terms: -7 + w = 9.797958971 Solving -7 + w = 9.797958971 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 = 9.797958971 + 7 Combine like terms: -7 + 7 = 0 0 + w = 9.797958971 + 7 w = 9.797958971 + 7 Combine like terms: 9.797958971 + 7 = 16.797958971 w = 16.797958971 Simplifying w = 16.797958971

Subproblem 2

w + -7 = -9.797958971 Simplifying w + -7 = -9.797958971 Reorder the terms: -7 + w = -9.797958971 Solving -7 + w = -9.797958971 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 = -9.797958971 + 7 Combine like terms: -7 + 7 = 0 0 + w = -9.797958971 + 7 w = -9.797958971 + 7 Combine like terms: -9.797958971 + 7 = -2.797958971 w = -2.797958971 Simplifying w = -2.797958971

Solution

The solution to the problem is based on the solutions from the subproblems. w = {16.797958971, -2.797958971}

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