-6b^2-13b+3=-3

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Solution for -6b^2-13b+3=-3 equation:


Simplifying
-6b2 + -13b + 3 = -3

Reorder the terms:
3 + -13b + -6b2 = -3

Solving
3 + -13b + -6b2 = -3

Solving for variable 'b'.

Reorder the terms:
3 + 3 + -13b + -6b2 = -3 + 3

Combine like terms: 3 + 3 = 6
6 + -13b + -6b2 = -3 + 3

Combine like terms: -3 + 3 = 0
6 + -13b + -6b2 = 0

Begin completing the square.  Divide all terms by
-6 the coefficient of the squared term: 

Divide each side by '-6'.
-1 + 2.166666667b + b2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 2.166666667b + 1 + b2 = 0 + 1

Reorder the terms:
-1 + 1 + 2.166666667b + b2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 2.166666667b + b2 = 0 + 1
2.166666667b + b2 = 0 + 1

Combine like terms: 0 + 1 = 1
2.166666667b + b2 = 1

The b term is 2.166666667b.  Take half its coefficient (1.083333334).
Square it (1.173611113) and add it to both sides.

Add '1.173611113' to each side of the equation.
2.166666667b + 1.173611113 + b2 = 1 + 1.173611113

Reorder the terms:
1.173611113 + 2.166666667b + b2 = 1 + 1.173611113

Combine like terms: 1 + 1.173611113 = 2.173611113
1.173611113 + 2.166666667b + b2 = 2.173611113

Factor a perfect square on the left side:
(b + 1.083333334)(b + 1.083333334) = 2.173611113

Calculate the square root of the right side: 1.474317168

Break this problem into two subproblems by setting 
(b + 1.083333334) equal to 1.474317168 and -1.474317168.

Subproblem 1

b + 1.083333334 = 1.474317168 Simplifying b + 1.083333334 = 1.474317168 Reorder the terms: 1.083333334 + b = 1.474317168 Solving 1.083333334 + b = 1.474317168 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-1.083333334' to each side of the equation. 1.083333334 + -1.083333334 + b = 1.474317168 + -1.083333334 Combine like terms: 1.083333334 + -1.083333334 = 0.000000000 0.000000000 + b = 1.474317168 + -1.083333334 b = 1.474317168 + -1.083333334 Combine like terms: 1.474317168 + -1.083333334 = 0.390983834 b = 0.390983834 Simplifying b = 0.390983834

Subproblem 2

b + 1.083333334 = -1.474317168 Simplifying b + 1.083333334 = -1.474317168 Reorder the terms: 1.083333334 + b = -1.474317168 Solving 1.083333334 + b = -1.474317168 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-1.083333334' to each side of the equation. 1.083333334 + -1.083333334 + b = -1.474317168 + -1.083333334 Combine like terms: 1.083333334 + -1.083333334 = 0.000000000 0.000000000 + b = -1.474317168 + -1.083333334 b = -1.474317168 + -1.083333334 Combine like terms: -1.474317168 + -1.083333334 = -2.557650502 b = -2.557650502 Simplifying b = -2.557650502

Solution

The solution to the problem is based on the solutions from the subproblems. b = {0.390983834, -2.557650502}

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