b^2-11b+11=0

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Solution for b^2-11b+11=0 equation:


Simplifying
b2 + -11b + 11 = 0

Reorder the terms:
11 + -11b + b2 = 0

Solving
11 + -11b + b2 = 0

Solving for variable 'b'.

Begin completing the square.

Move the constant term to the right:

Add '-11' to each side of the equation.
11 + -11b + -11 + b2 = 0 + -11

Reorder the terms:
11 + -11 + -11b + b2 = 0 + -11

Combine like terms: 11 + -11 = 0
0 + -11b + b2 = 0 + -11
-11b + b2 = 0 + -11

Combine like terms: 0 + -11 = -11
-11b + b2 = -11

The b term is -11b.  Take half its coefficient (-5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
-11b + 30.25 + b2 = -11 + 30.25

Reorder the terms:
30.25 + -11b + b2 = -11 + 30.25

Combine like terms: -11 + 30.25 = 19.25
30.25 + -11b + b2 = 19.25

Factor a perfect square on the left side:
(b + -5.5)(b + -5.5) = 19.25

Calculate the square root of the right side: 4.387482194

Break this problem into two subproblems by setting 
(b + -5.5) equal to 4.387482194 and -4.387482194.

Subproblem 1

b + -5.5 = 4.387482194 Simplifying b + -5.5 = 4.387482194 Reorder the terms: -5.5 + b = 4.387482194 Solving -5.5 + b = 4.387482194 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + b = 4.387482194 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + b = 4.387482194 + 5.5 b = 4.387482194 + 5.5 Combine like terms: 4.387482194 + 5.5 = 9.887482194 b = 9.887482194 Simplifying b = 9.887482194

Subproblem 2

b + -5.5 = -4.387482194 Simplifying b + -5.5 = -4.387482194 Reorder the terms: -5.5 + b = -4.387482194 Solving -5.5 + b = -4.387482194 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '5.5' to each side of the equation. -5.5 + 5.5 + b = -4.387482194 + 5.5 Combine like terms: -5.5 + 5.5 = 0.0 0.0 + b = -4.387482194 + 5.5 b = -4.387482194 + 5.5 Combine like terms: -4.387482194 + 5.5 = 1.112517806 b = 1.112517806 Simplifying b = 1.112517806

Solution

The solution to the problem is based on the solutions from the subproblems. b = {9.887482194, 1.112517806}

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