3b^2+12b-29=-6

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Solution for 3b^2+12b-29=-6 equation:


Simplifying
3b2 + 12b + -29 = -6

Reorder the terms:
-29 + 12b + 3b2 = -6

Solving
-29 + 12b + 3b2 = -6

Solving for variable 'b'.

Reorder the terms:
-29 + 6 + 12b + 3b2 = -6 + 6

Combine like terms: -29 + 6 = -23
-23 + 12b + 3b2 = -6 + 6

Combine like terms: -6 + 6 = 0
-23 + 12b + 3b2 = 0

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

Divide each side by '3'.
-7.666666667 + 4b + b2 = 0

Move the constant term to the right:

Add '7.666666667' to each side of the equation.
-7.666666667 + 4b + 7.666666667 + b2 = 0 + 7.666666667

Reorder the terms:
-7.666666667 + 7.666666667 + 4b + b2 = 0 + 7.666666667

Combine like terms: -7.666666667 + 7.666666667 = 0.000000000
0.000000000 + 4b + b2 = 0 + 7.666666667
4b + b2 = 0 + 7.666666667

Combine like terms: 0 + 7.666666667 = 7.666666667
4b + b2 = 7.666666667

The b term is 4b.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4b + 4 + b2 = 7.666666667 + 4

Reorder the terms:
4 + 4b + b2 = 7.666666667 + 4

Combine like terms: 7.666666667 + 4 = 11.666666667
4 + 4b + b2 = 11.666666667

Factor a perfect square on the left side:
(b + 2)(b + 2) = 11.666666667

Calculate the square root of the right side: 3.415650255

Break this problem into two subproblems by setting 
(b + 2) equal to 3.415650255 and -3.415650255.

Subproblem 1

b + 2 = 3.415650255 Simplifying b + 2 = 3.415650255 Reorder the terms: 2 + b = 3.415650255 Solving 2 + b = 3.415650255 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + b = 3.415650255 + -2 Combine like terms: 2 + -2 = 0 0 + b = 3.415650255 + -2 b = 3.415650255 + -2 Combine like terms: 3.415650255 + -2 = 1.415650255 b = 1.415650255 Simplifying b = 1.415650255

Subproblem 2

b + 2 = -3.415650255 Simplifying b + 2 = -3.415650255 Reorder the terms: 2 + b = -3.415650255 Solving 2 + b = -3.415650255 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + b = -3.415650255 + -2 Combine like terms: 2 + -2 = 0 0 + b = -3.415650255 + -2 b = -3.415650255 + -2 Combine like terms: -3.415650255 + -2 = -5.415650255 b = -5.415650255 Simplifying b = -5.415650255

Solution

The solution to the problem is based on the solutions from the subproblems. b = {1.415650255, -5.415650255}

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