-w(4w-3)=-12

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Solution for -w(4w-3)=-12 equation:


Simplifying
-1w(4w + -3) = -12

Reorder the terms:
-1w(-3 + 4w) = -12
(-3 * -1w + 4w * -1w) = -12
(3w + -4w2) = -12

Solving
3w + -4w2 = -12

Solving for variable 'w'.

Reorder the terms:
12 + 3w + -4w2 = -12 + 12

Combine like terms: -12 + 12 = 0
12 + 3w + -4w2 = 0

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-3 + -0.75w + w2 = 0

Move the constant term to the right:

Add '3' to each side of the equation.
-3 + -0.75w + 3 + w2 = 0 + 3

Reorder the terms:
-3 + 3 + -0.75w + w2 = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -0.75w + w2 = 0 + 3
-0.75w + w2 = 0 + 3

Combine like terms: 0 + 3 = 3
-0.75w + w2 = 3

The w term is -0.75w.  Take half its coefficient (-0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
-0.75w + 0.140625 + w2 = 3 + 0.140625

Reorder the terms:
0.140625 + -0.75w + w2 = 3 + 0.140625

Combine like terms: 3 + 0.140625 = 3.140625
0.140625 + -0.75w + w2 = 3.140625

Factor a perfect square on the left side:
(w + -0.375)(w + -0.375) = 3.140625

Calculate the square root of the right side: 1.77218086

Break this problem into two subproblems by setting 
(w + -0.375) equal to 1.77218086 and -1.77218086.

Subproblem 1

w + -0.375 = 1.77218086 Simplifying w + -0.375 = 1.77218086 Reorder the terms: -0.375 + w = 1.77218086 Solving -0.375 + w = 1.77218086 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + w = 1.77218086 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + w = 1.77218086 + 0.375 w = 1.77218086 + 0.375 Combine like terms: 1.77218086 + 0.375 = 2.14718086 w = 2.14718086 Simplifying w = 2.14718086

Subproblem 2

w + -0.375 = -1.77218086 Simplifying w + -0.375 = -1.77218086 Reorder the terms: -0.375 + w = -1.77218086 Solving -0.375 + w = -1.77218086 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + w = -1.77218086 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + w = -1.77218086 + 0.375 w = -1.77218086 + 0.375 Combine like terms: -1.77218086 + 0.375 = -1.39718086 w = -1.39718086 Simplifying w = -1.39718086

Solution

The solution to the problem is based on the solutions from the subproblems. w = {2.14718086, -1.39718086}

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