w^2=45-14w

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Solution for w^2=45-14w equation:


Simplifying
w2 = 45 + -14w

Solving
w2 = 45 + -14w

Solving for variable 'w'.

Reorder the terms:
-45 + 14w + w2 = 45 + -14w + -45 + 14w

Reorder the terms:
-45 + 14w + w2 = 45 + -45 + -14w + 14w

Combine like terms: 45 + -45 = 0
-45 + 14w + w2 = 0 + -14w + 14w
-45 + 14w + w2 = -14w + 14w

Combine like terms: -14w + 14w = 0
-45 + 14w + w2 = 0

Begin completing the square.

Move the constant term to the right:

Add '45' to each side of the equation.
-45 + 14w + 45 + w2 = 0 + 45

Reorder the terms:
-45 + 45 + 14w + w2 = 0 + 45

Combine like terms: -45 + 45 = 0
0 + 14w + w2 = 0 + 45
14w + w2 = 0 + 45

Combine like terms: 0 + 45 = 45
14w + w2 = 45

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 = 45 + 49

Reorder the terms:
49 + 14w + w2 = 45 + 49

Combine like terms: 45 + 49 = 94
49 + 14w + w2 = 94

Factor a perfect square on the left side:
(w + 7)(w + 7) = 94

Calculate the square root of the right side: 9.695359715

Break this problem into two subproblems by setting 
(w + 7) equal to 9.695359715 and -9.695359715.

Subproblem 1

w + 7 = 9.695359715 Simplifying w + 7 = 9.695359715 Reorder the terms: 7 + w = 9.695359715 Solving 7 + w = 9.695359715 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 = 9.695359715 + -7 Combine like terms: 7 + -7 = 0 0 + w = 9.695359715 + -7 w = 9.695359715 + -7 Combine like terms: 9.695359715 + -7 = 2.695359715 w = 2.695359715 Simplifying w = 2.695359715

Subproblem 2

w + 7 = -9.695359715 Simplifying w + 7 = -9.695359715 Reorder the terms: 7 + w = -9.695359715 Solving 7 + w = -9.695359715 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 = -9.695359715 + -7 Combine like terms: 7 + -7 = 0 0 + w = -9.695359715 + -7 w = -9.695359715 + -7 Combine like terms: -9.695359715 + -7 = -16.695359715 w = -16.695359715 Simplifying w = -16.695359715

Solution

The solution to the problem is based on the solutions from the subproblems. w = {2.695359715, -16.695359715}

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