b^2-16b-106=-8

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Solution for b^2-16b-106=-8 equation:


Simplifying
b2 + -16b + -106 = -8

Reorder the terms:
-106 + -16b + b2 = -8

Solving
-106 + -16b + b2 = -8

Solving for variable 'b'.

Reorder the terms:
-106 + 8 + -16b + b2 = -8 + 8

Combine like terms: -106 + 8 = -98
-98 + -16b + b2 = -8 + 8

Combine like terms: -8 + 8 = 0
-98 + -16b + b2 = 0

Begin completing the square.

Move the constant term to the right:

Add '98' to each side of the equation.
-98 + -16b + 98 + b2 = 0 + 98

Reorder the terms:
-98 + 98 + -16b + b2 = 0 + 98

Combine like terms: -98 + 98 = 0
0 + -16b + b2 = 0 + 98
-16b + b2 = 0 + 98

Combine like terms: 0 + 98 = 98
-16b + b2 = 98

The b term is -16b.  Take half its coefficient (-8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
-16b + 64 + b2 = 98 + 64

Reorder the terms:
64 + -16b + b2 = 98 + 64

Combine like terms: 98 + 64 = 162
64 + -16b + b2 = 162

Factor a perfect square on the left side:
(b + -8)(b + -8) = 162

Calculate the square root of the right side: 12.727922061

Break this problem into two subproblems by setting 
(b + -8) equal to 12.727922061 and -12.727922061.

Subproblem 1

b + -8 = 12.727922061 Simplifying b + -8 = 12.727922061 Reorder the terms: -8 + b = 12.727922061 Solving -8 + b = 12.727922061 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + b = 12.727922061 + 8 Combine like terms: -8 + 8 = 0 0 + b = 12.727922061 + 8 b = 12.727922061 + 8 Combine like terms: 12.727922061 + 8 = 20.727922061 b = 20.727922061 Simplifying b = 20.727922061

Subproblem 2

b + -8 = -12.727922061 Simplifying b + -8 = -12.727922061 Reorder the terms: -8 + b = -12.727922061 Solving -8 + b = -12.727922061 Solving for variable 'b'. Move all terms containing b to the left, all other terms to the right. Add '8' to each side of the equation. -8 + 8 + b = -12.727922061 + 8 Combine like terms: -8 + 8 = 0 0 + b = -12.727922061 + 8 b = -12.727922061 + 8 Combine like terms: -12.727922061 + 8 = -4.727922061 b = -4.727922061 Simplifying b = -4.727922061

Solution

The solution to the problem is based on the solutions from the subproblems. b = {20.727922061, -4.727922061}

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