(w+4)(2w-5+4)=132

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Solution for (w+4)(2w-5+4)=132 equation:


Simplifying
(w + 4)(2w + -5 + 4) = 132

Reorder the terms:
(4 + w)(2w + -5 + 4) = 132

Reorder the terms:
(4 + w)(-5 + 4 + 2w) = 132

Combine like terms: -5 + 4 = -1
(4 + w)(-1 + 2w) = 132

Multiply (4 + w) * (-1 + 2w)
(4(-1 + 2w) + w(-1 + 2w)) = 132
((-1 * 4 + 2w * 4) + w(-1 + 2w)) = 132
((-4 + 8w) + w(-1 + 2w)) = 132
(-4 + 8w + (-1 * w + 2w * w)) = 132
(-4 + 8w + (-1w + 2w2)) = 132

Combine like terms: 8w + -1w = 7w
(-4 + 7w + 2w2) = 132

Solving
-4 + 7w + 2w2 = 132

Solving for variable 'w'.

Reorder the terms:
-4 + -132 + 7w + 2w2 = 132 + -132

Combine like terms: -4 + -132 = -136
-136 + 7w + 2w2 = 132 + -132

Combine like terms: 132 + -132 = 0
-136 + 7w + 2w2 = 0

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

Divide each side by '2'.
-68 + 3.5w + w2 = 0

Move the constant term to the right:

Add '68' to each side of the equation.
-68 + 3.5w + 68 + w2 = 0 + 68

Reorder the terms:
-68 + 68 + 3.5w + w2 = 0 + 68

Combine like terms: -68 + 68 = 0
0 + 3.5w + w2 = 0 + 68
3.5w + w2 = 0 + 68

Combine like terms: 0 + 68 = 68
3.5w + w2 = 68

The w term is 3.5w.  Take half its coefficient (1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
3.5w + 3.0625 + w2 = 68 + 3.0625

Reorder the terms:
3.0625 + 3.5w + w2 = 68 + 3.0625

Combine like terms: 68 + 3.0625 = 71.0625
3.0625 + 3.5w + w2 = 71.0625

Factor a perfect square on the left side:
(w + 1.75)(w + 1.75) = 71.0625

Calculate the square root of the right side: 8.42985765

Break this problem into two subproblems by setting 
(w + 1.75) equal to 8.42985765 and -8.42985765.

Subproblem 1

w + 1.75 = 8.42985765 Simplifying w + 1.75 = 8.42985765 Reorder the terms: 1.75 + w = 8.42985765 Solving 1.75 + w = 8.42985765 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + w = 8.42985765 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + w = 8.42985765 + -1.75 w = 8.42985765 + -1.75 Combine like terms: 8.42985765 + -1.75 = 6.67985765 w = 6.67985765 Simplifying w = 6.67985765

Subproblem 2

w + 1.75 = -8.42985765 Simplifying w + 1.75 = -8.42985765 Reorder the terms: 1.75 + w = -8.42985765 Solving 1.75 + w = -8.42985765 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-1.75' to each side of the equation. 1.75 + -1.75 + w = -8.42985765 + -1.75 Combine like terms: 1.75 + -1.75 = 0.00 0.00 + w = -8.42985765 + -1.75 w = -8.42985765 + -1.75 Combine like terms: -8.42985765 + -1.75 = -10.17985765 w = -10.17985765 Simplifying w = -10.17985765

Solution

The solution to the problem is based on the solutions from the subproblems. w = {6.67985765, -10.17985765}

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