9*b^2+6*b+1=930

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Solution for 9*b^2+6*b+1=930 equation:


Simplifying
9b2 + 6b + 1 = 930

Reorder the terms:
1 + 6b + 9b2 = 930

Solving
1 + 6b + 9b2 = 930

Solving for variable 'b'.

Reorder the terms:
1 + -930 + 6b + 9b2 = 930 + -930

Combine like terms: 1 + -930 = -929
-929 + 6b + 9b2 = 930 + -930

Combine like terms: 930 + -930 = 0
-929 + 6b + 9b2 = 0

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

Divide each side by '9'.
-103.2222222 + 0.6666666667b + b2 = 0

Move the constant term to the right:

Add '103.2222222' to each side of the equation.
-103.2222222 + 0.6666666667b + 103.2222222 + b2 = 0 + 103.2222222

Reorder the terms:
-103.2222222 + 103.2222222 + 0.6666666667b + b2 = 0 + 103.2222222

Combine like terms: -103.2222222 + 103.2222222 = 0.0000000
0.0000000 + 0.6666666667b + b2 = 0 + 103.2222222
0.6666666667b + b2 = 0 + 103.2222222

Combine like terms: 0 + 103.2222222 = 103.2222222
0.6666666667b + b2 = 103.2222222

The b term is 0.6666666667b.  Take half its coefficient (0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
0.6666666667b + 0.1111111112 + b2 = 103.2222222 + 0.1111111112

Reorder the terms:
0.1111111112 + 0.6666666667b + b2 = 103.2222222 + 0.1111111112

Combine like terms: 103.2222222 + 0.1111111112 = 103.3333333112
0.1111111112 + 0.6666666667b + b2 = 103.3333333112

Factor a perfect square on the left side:
(b + 0.3333333334)(b + 0.3333333334) = 103.3333333112

Calculate the square root of the right side: 10.165300454

Break this problem into two subproblems by setting 
(b + 0.3333333334) equal to 10.165300454 and -10.165300454.

Subproblem 1

b + 0.3333333334 = 10.165300454 Simplifying b + 0.3333333334 = 10.165300454 Reorder the terms: 0.3333333334 + b = 10.165300454 Solving 0.3333333334 + b = 10.165300454 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.3333333334' to each side of the equation. 0.3333333334 + -0.3333333334 + b = 10.165300454 + -0.3333333334 Combine like terms: 0.3333333334 + -0.3333333334 = 0.0000000000 0.0000000000 + b = 10.165300454 + -0.3333333334 b = 10.165300454 + -0.3333333334 Combine like terms: 10.165300454 + -0.3333333334 = 9.8319671206 b = 9.8319671206 Simplifying b = 9.8319671206

Subproblem 2

b + 0.3333333334 = -10.165300454 Simplifying b + 0.3333333334 = -10.165300454 Reorder the terms: 0.3333333334 + b = -10.165300454 Solving 0.3333333334 + b = -10.165300454 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.3333333334' to each side of the equation. 0.3333333334 + -0.3333333334 + b = -10.165300454 + -0.3333333334 Combine like terms: 0.3333333334 + -0.3333333334 = 0.0000000000 0.0000000000 + b = -10.165300454 + -0.3333333334 b = -10.165300454 + -0.3333333334 Combine like terms: -10.165300454 + -0.3333333334 = -10.4986337874 b = -10.4986337874 Simplifying b = -10.4986337874

Solution

The solution to the problem is based on the solutions from the subproblems. b = {9.8319671206, -10.4986337874}

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