154=(9+w)(w)

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Solution for 154=(9+w)(w) equation:


Simplifying
154 = (9 + w)(w)

Reorder the terms for easier multiplication:
154 = w(9 + w)
154 = (9 * w + w * w)
154 = (9w + w2)

Solving
154 = 9w + w2

Solving for variable 'w'.

Reorder the terms:
154 + -9w + -1w2 = 9w + -9w + w2 + -1w2

Combine like terms: 9w + -9w = 0
154 + -9w + -1w2 = 0 + w2 + -1w2
154 + -9w + -1w2 = w2 + -1w2

Combine like terms: w2 + -1w2 = 0
154 + -9w + -1w2 = 0

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

Divide each side by '-1'.
-154 + 9w + w2 = 0

Move the constant term to the right:

Add '154' to each side of the equation.
-154 + 9w + 154 + w2 = 0 + 154

Reorder the terms:
-154 + 154 + 9w + w2 = 0 + 154

Combine like terms: -154 + 154 = 0
0 + 9w + w2 = 0 + 154
9w + w2 = 0 + 154

Combine like terms: 0 + 154 = 154
9w + w2 = 154

The w term is 9w.  Take half its coefficient (4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
9w + 20.25 + w2 = 154 + 20.25

Reorder the terms:
20.25 + 9w + w2 = 154 + 20.25

Combine like terms: 154 + 20.25 = 174.25
20.25 + 9w + w2 = 174.25

Factor a perfect square on the left side:
(w + 4.5)(w + 4.5) = 174.25

Calculate the square root of the right side: 13.200378782

Break this problem into two subproblems by setting 
(w + 4.5) equal to 13.200378782 and -13.200378782.

Subproblem 1

w + 4.5 = 13.200378782 Simplifying w + 4.5 = 13.200378782 Reorder the terms: 4.5 + w = 13.200378782 Solving 4.5 + w = 13.200378782 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-4.5' to each side of the equation. 4.5 + -4.5 + w = 13.200378782 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + w = 13.200378782 + -4.5 w = 13.200378782 + -4.5 Combine like terms: 13.200378782 + -4.5 = 8.700378782 w = 8.700378782 Simplifying w = 8.700378782

Subproblem 2

w + 4.5 = -13.200378782 Simplifying w + 4.5 = -13.200378782 Reorder the terms: 4.5 + w = -13.200378782 Solving 4.5 + w = -13.200378782 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-4.5' to each side of the equation. 4.5 + -4.5 + w = -13.200378782 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + w = -13.200378782 + -4.5 w = -13.200378782 + -4.5 Combine like terms: -13.200378782 + -4.5 = -17.700378782 w = -17.700378782 Simplifying w = -17.700378782

Solution

The solution to the problem is based on the solutions from the subproblems. w = {8.700378782, -17.700378782}

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