b^2-8b=-60

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Solution for b^2-8b=-60 equation:


Simplifying
b2 + -8b = -60

Reorder the terms:
-8b + b2 = -60

Solving
-8b + b2 = -60

Solving for variable 'b'.

Reorder the terms:
60 + -8b + b2 = -60 + 60

Combine like terms: -60 + 60 = 0
60 + -8b + b2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-60' to each side of the equation.
60 + -8b + -60 + b2 = 0 + -60

Reorder the terms:
60 + -60 + -8b + b2 = 0 + -60

Combine like terms: 60 + -60 = 0
0 + -8b + b2 = 0 + -60
-8b + b2 = 0 + -60

Combine like terms: 0 + -60 = -60
-8b + b2 = -60

The b term is -8b.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8b + 16 + b2 = -60 + 16

Reorder the terms:
16 + -8b + b2 = -60 + 16

Combine like terms: -60 + 16 = -44
16 + -8b + b2 = -44

Factor a perfect square on the left side:
(b + -4)(b + -4) = -44

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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