b^2+6b=6

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Solution for b^2+6b=6 equation:


Simplifying
b2 + 6b = 6

Reorder the terms:
6b + b2 = 6

Solving
6b + b2 = 6

Solving for variable 'b'.

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

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

Begin completing the square.

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + 6b + 6 + b2 = 0 + 6

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

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

Combine like terms: 0 + 6 = 6
6b + b2 = 6

The b term is 6b.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6b + 9 + b2 = 6 + 9

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

Combine like terms: 6 + 9 = 15
9 + 6b + b2 = 15

Factor a perfect square on the left side:
(b + 3)(b + 3) = 15

Calculate the square root of the right side: 3.872983346

Break this problem into two subproblems by setting 
(b + 3) equal to 3.872983346 and -3.872983346.

Subproblem 1

b + 3 = 3.872983346 Simplifying b + 3 = 3.872983346 Reorder the terms: 3 + b = 3.872983346 Solving 3 + b = 3.872983346 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + b = 3.872983346 + -3 Combine like terms: 3 + -3 = 0 0 + b = 3.872983346 + -3 b = 3.872983346 + -3 Combine like terms: 3.872983346 + -3 = 0.872983346 b = 0.872983346 Simplifying b = 0.872983346

Subproblem 2

b + 3 = -3.872983346 Simplifying b + 3 = -3.872983346 Reorder the terms: 3 + b = -3.872983346 Solving 3 + b = -3.872983346 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + b = -3.872983346 + -3 Combine like terms: 3 + -3 = 0 0 + b = -3.872983346 + -3 b = -3.872983346 + -3 Combine like terms: -3.872983346 + -3 = -6.872983346 b = -6.872983346 Simplifying b = -6.872983346

Solution

The solution to the problem is based on the solutions from the subproblems. b = {0.872983346, -6.872983346}

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