(2w+3)w=66

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Solution for (2w+3)w=66 equation:


Simplifying
(2w + 3) * w = 66

Reorder the terms:
(3 + 2w) * w = 66

Reorder the terms for easier multiplication:
w(3 + 2w) = 66
(3 * w + 2w * w) = 66
(3w + 2w2) = 66

Solving
3w + 2w2 = 66

Solving for variable 'w'.

Reorder the terms:
-66 + 3w + 2w2 = 66 + -66

Combine like terms: 66 + -66 = 0
-66 + 3w + 2w2 = 0

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

Divide each side by '2'.
-33 + 1.5w + w2 = 0

Move the constant term to the right:

Add '33' to each side of the equation.
-33 + 1.5w + 33 + w2 = 0 + 33

Reorder the terms:
-33 + 33 + 1.5w + w2 = 0 + 33

Combine like terms: -33 + 33 = 0
0 + 1.5w + w2 = 0 + 33
1.5w + w2 = 0 + 33

Combine like terms: 0 + 33 = 33
1.5w + w2 = 33

The w term is 1.5w.  Take half its coefficient (0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
1.5w + 0.5625 + w2 = 33 + 0.5625

Reorder the terms:
0.5625 + 1.5w + w2 = 33 + 0.5625

Combine like terms: 33 + 0.5625 = 33.5625
0.5625 + 1.5w + w2 = 33.5625

Factor a perfect square on the left side:
(w + 0.75)(w + 0.75) = 33.5625

Calculate the square root of the right side: 5.793315113

Break this problem into two subproblems by setting 
(w + 0.75) equal to 5.793315113 and -5.793315113.

Subproblem 1

w + 0.75 = 5.793315113 Simplifying w + 0.75 = 5.793315113 Reorder the terms: 0.75 + w = 5.793315113 Solving 0.75 + w = 5.793315113 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + w = 5.793315113 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + w = 5.793315113 + -0.75 w = 5.793315113 + -0.75 Combine like terms: 5.793315113 + -0.75 = 5.043315113 w = 5.043315113 Simplifying w = 5.043315113

Subproblem 2

w + 0.75 = -5.793315113 Simplifying w + 0.75 = -5.793315113 Reorder the terms: 0.75 + w = -5.793315113 Solving 0.75 + w = -5.793315113 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-0.75' to each side of the equation. 0.75 + -0.75 + w = -5.793315113 + -0.75 Combine like terms: 0.75 + -0.75 = 0.00 0.00 + w = -5.793315113 + -0.75 w = -5.793315113 + -0.75 Combine like terms: -5.793315113 + -0.75 = -6.543315113 w = -6.543315113 Simplifying w = -6.543315113

Solution

The solution to the problem is based on the solutions from the subproblems. w = {5.043315113, -6.543315113}

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