.5(2b-12)+b^2=.5+22

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Solution for .5(2b-12)+b^2=.5+22 equation:


Simplifying
0.5(2b + -12) + b2 = 0.5 + 22

Reorder the terms:
0.5(-12 + 2b) + b2 = 0.5 + 22
(-12 * 0.5 + 2b * 0.5) + b2 = 0.5 + 22
(-6 + 1b) + b2 = 0.5 + 22

Combine like terms: 0.5 + 22 = 22.5
-6 + 1b + b2 = 22.5

Solving
-6 + 1b + b2 = 22.5

Solving for variable 'b'.

Reorder the terms:
-6 + -22.5 + 1b + b2 = 22.5 + -22.5

Combine like terms: -6 + -22.5 = -28.5
-28.5 + 1b + b2 = 22.5 + -22.5

Combine like terms: 22.5 + -22.5 = 0.0
-28.5 + 1b + b2 = 0.0

Begin completing the square.

Move the constant term to the right:

Add '28.5' to each side of the equation.
-28.5 + 1b + 28.5 + b2 = 0.0 + 28.5

Reorder the terms:
-28.5 + 28.5 + 1b + b2 = 0.0 + 28.5

Combine like terms: -28.5 + 28.5 = 0.0
0.0 + 1b + b2 = 0.0 + 28.5
1b + b2 = 0.0 + 28.5

Combine like terms: 0.0 + 28.5 = 28.5
1b + b2 = 28.5

The b term is 1b.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
b + 0.25 + b2 = 28.5 + 0.25

Reorder the terms:
0.25 + b + b2 = 28.5 + 0.25

Combine like terms: 28.5 + 0.25 = 28.75
0.25 + b + b2 = 28.75

Factor a perfect square on the left side:
(b + 0.5)(b + 0.5) = 28.75

Calculate the square root of the right side: 5.361902647

Break this problem into two subproblems by setting 
(b + 0.5) equal to 5.361902647 and -5.361902647.

Subproblem 1

b + 0.5 = 5.361902647 Simplifying b + 0.5 = 5.361902647 Reorder the terms: 0.5 + b = 5.361902647 Solving 0.5 + b = 5.361902647 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + b = 5.361902647 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + b = 5.361902647 + -0.5 b = 5.361902647 + -0.5 Combine like terms: 5.361902647 + -0.5 = 4.861902647 b = 4.861902647 Simplifying b = 4.861902647

Subproblem 2

b + 0.5 = -5.361902647 Simplifying b + 0.5 = -5.361902647 Reorder the terms: 0.5 + b = -5.361902647 Solving 0.5 + b = -5.361902647 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + b = -5.361902647 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + b = -5.361902647 + -0.5 b = -5.361902647 + -0.5 Combine like terms: -5.361902647 + -0.5 = -5.861902647 b = -5.861902647 Simplifying b = -5.861902647

Solution

The solution to the problem is based on the solutions from the subproblems. b = {4.861902647, -5.861902647}

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