6b^2+3b-14=0

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Solution for 6b^2+3b-14=0 equation:


Simplifying
6b2 + 3b + -14 = 0

Reorder the terms:
-14 + 3b + 6b2 = 0

Solving
-14 + 3b + 6b2 = 0

Solving for variable 'b'.

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

Divide each side by '6'.
-2.333333333 + 0.5b + b2 = 0

Move the constant term to the right:

Add '2.333333333' to each side of the equation.
-2.333333333 + 0.5b + 2.333333333 + b2 = 0 + 2.333333333

Reorder the terms:
-2.333333333 + 2.333333333 + 0.5b + b2 = 0 + 2.333333333

Combine like terms: -2.333333333 + 2.333333333 = 0.000000000
0.000000000 + 0.5b + b2 = 0 + 2.333333333
0.5b + b2 = 0 + 2.333333333

Combine like terms: 0 + 2.333333333 = 2.333333333
0.5b + b2 = 2.333333333

The b term is 0.5b.  Take half its coefficient (0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
0.5b + 0.0625 + b2 = 2.333333333 + 0.0625

Reorder the terms:
0.0625 + 0.5b + b2 = 2.333333333 + 0.0625

Combine like terms: 2.333333333 + 0.0625 = 2.395833333
0.0625 + 0.5b + b2 = 2.395833333

Factor a perfect square on the left side:
(b + 0.25)(b + 0.25) = 2.395833333

Calculate the square root of the right side: 1.547847968

Break this problem into two subproblems by setting 
(b + 0.25) equal to 1.547847968 and -1.547847968.

Subproblem 1

b + 0.25 = 1.547847968 Simplifying b + 0.25 = 1.547847968 Reorder the terms: 0.25 + b = 1.547847968 Solving 0.25 + b = 1.547847968 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + b = 1.547847968 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + b = 1.547847968 + -0.25 b = 1.547847968 + -0.25 Combine like terms: 1.547847968 + -0.25 = 1.297847968 b = 1.297847968 Simplifying b = 1.297847968

Subproblem 2

b + 0.25 = -1.547847968 Simplifying b + 0.25 = -1.547847968 Reorder the terms: 0.25 + b = -1.547847968 Solving 0.25 + b = -1.547847968 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.25' to each side of the equation. 0.25 + -0.25 + b = -1.547847968 + -0.25 Combine like terms: 0.25 + -0.25 = 0.00 0.00 + b = -1.547847968 + -0.25 b = -1.547847968 + -0.25 Combine like terms: -1.547847968 + -0.25 = -1.797847968 b = -1.797847968 Simplifying b = -1.797847968

Solution

The solution to the problem is based on the solutions from the subproblems. b = {1.297847968, -1.797847968}

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