30b^2+33b-56=

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Solution for 30b^2+33b-56= equation:


Simplifying
30b2 + 33b + -56 = 0

Reorder the terms:
-56 + 33b + 30b2 = 0

Solving
-56 + 33b + 30b2 = 0

Solving for variable 'b'.

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

Divide each side by '30'.
-1.866666667 + 1.1b + b2 = 0

Move the constant term to the right:

Add '1.866666667' to each side of the equation.
-1.866666667 + 1.1b + 1.866666667 + b2 = 0 + 1.866666667

Reorder the terms:
-1.866666667 + 1.866666667 + 1.1b + b2 = 0 + 1.866666667

Combine like terms: -1.866666667 + 1.866666667 = 0.000000000
0.000000000 + 1.1b + b2 = 0 + 1.866666667
1.1b + b2 = 0 + 1.866666667

Combine like terms: 0 + 1.866666667 = 1.866666667
1.1b + b2 = 1.866666667

The b term is 1.1b.  Take half its coefficient (0.55).
Square it (0.3025) and add it to both sides.

Add '0.3025' to each side of the equation.
1.1b + 0.3025 + b2 = 1.866666667 + 0.3025

Reorder the terms:
0.3025 + 1.1b + b2 = 1.866666667 + 0.3025

Combine like terms: 1.866666667 + 0.3025 = 2.169166667
0.3025 + 1.1b + b2 = 2.169166667

Factor a perfect square on the left side:
(b + 0.55)(b + 0.55) = 2.169166667

Calculate the square root of the right side: 1.472809107

Break this problem into two subproblems by setting 
(b + 0.55) equal to 1.472809107 and -1.472809107.

Subproblem 1

b + 0.55 = 1.472809107 Simplifying b + 0.55 = 1.472809107 Reorder the terms: 0.55 + b = 1.472809107 Solving 0.55 + b = 1.472809107 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.55' to each side of the equation. 0.55 + -0.55 + b = 1.472809107 + -0.55 Combine like terms: 0.55 + -0.55 = 0.00 0.00 + b = 1.472809107 + -0.55 b = 1.472809107 + -0.55 Combine like terms: 1.472809107 + -0.55 = 0.922809107 b = 0.922809107 Simplifying b = 0.922809107

Subproblem 2

b + 0.55 = -1.472809107 Simplifying b + 0.55 = -1.472809107 Reorder the terms: 0.55 + b = -1.472809107 Solving 0.55 + b = -1.472809107 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.55' to each side of the equation. 0.55 + -0.55 + b = -1.472809107 + -0.55 Combine like terms: 0.55 + -0.55 = 0.00 0.00 + b = -1.472809107 + -0.55 b = -1.472809107 + -0.55 Combine like terms: -1.472809107 + -0.55 = -2.022809107 b = -2.022809107 Simplifying b = -2.022809107

Solution

The solution to the problem is based on the solutions from the subproblems. b = {0.922809107, -2.022809107}

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