6(2b-4)b=5

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Solution for 6(2b-4)b=5 equation:


Simplifying
6(2b + -4) * b = 5

Reorder the terms:
6(-4 + 2b) * b = 5

Reorder the terms for easier multiplication:
6b(-4 + 2b) = 5
(-4 * 6b + 2b * 6b) = 5
(-24b + 12b2) = 5

Solving
-24b + 12b2 = 5

Solving for variable 'b'.

Reorder the terms:
-5 + -24b + 12b2 = 5 + -5

Combine like terms: 5 + -5 = 0
-5 + -24b + 12b2 = 0

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

Divide each side by '12'.
-0.4166666667 + -2b + b2 = 0

Move the constant term to the right:

Add '0.4166666667' to each side of the equation.
-0.4166666667 + -2b + 0.4166666667 + b2 = 0 + 0.4166666667

Reorder the terms:
-0.4166666667 + 0.4166666667 + -2b + b2 = 0 + 0.4166666667

Combine like terms: -0.4166666667 + 0.4166666667 = 0.0000000000
0.0000000000 + -2b + b2 = 0 + 0.4166666667
-2b + b2 = 0 + 0.4166666667

Combine like terms: 0 + 0.4166666667 = 0.4166666667
-2b + b2 = 0.4166666667

The b term is -2b.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2b + 1 + b2 = 0.4166666667 + 1

Reorder the terms:
1 + -2b + b2 = 0.4166666667 + 1

Combine like terms: 0.4166666667 + 1 = 1.4166666667
1 + -2b + b2 = 1.4166666667

Factor a perfect square on the left side:
(b + -1)(b + -1) = 1.4166666667

Calculate the square root of the right side: 1.190238071

Break this problem into two subproblems by setting 
(b + -1) equal to 1.190238071 and -1.190238071.

Subproblem 1

b + -1 = 1.190238071 Simplifying b + -1 = 1.190238071 Reorder the terms: -1 + b = 1.190238071 Solving -1 + b = 1.190238071 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + b = 1.190238071 + 1 Combine like terms: -1 + 1 = 0 0 + b = 1.190238071 + 1 b = 1.190238071 + 1 Combine like terms: 1.190238071 + 1 = 2.190238071 b = 2.190238071 Simplifying b = 2.190238071

Subproblem 2

b + -1 = -1.190238071 Simplifying b + -1 = -1.190238071 Reorder the terms: -1 + b = -1.190238071 Solving -1 + b = -1.190238071 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + b = -1.190238071 + 1 Combine like terms: -1 + 1 = 0 0 + b = -1.190238071 + 1 b = -1.190238071 + 1 Combine like terms: -1.190238071 + 1 = -0.190238071 b = -0.190238071 Simplifying b = -0.190238071

Solution

The solution to the problem is based on the solutions from the subproblems. b = {2.190238071, -0.190238071}

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