b^2+5b=-36

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Solution for b^2+5b=-36 equation:


Simplifying
b2 + 5b = -36

Reorder the terms:
5b + b2 = -36

Solving
5b + b2 = -36

Solving for variable 'b'.

Reorder the terms:
36 + 5b + b2 = -36 + 36

Combine like terms: -36 + 36 = 0
36 + 5b + b2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-36' to each side of the equation.
36 + 5b + -36 + b2 = 0 + -36

Reorder the terms:
36 + -36 + 5b + b2 = 0 + -36

Combine like terms: 36 + -36 = 0
0 + 5b + b2 = 0 + -36
5b + b2 = 0 + -36

Combine like terms: 0 + -36 = -36
5b + b2 = -36

The b term is 5b.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5b + 6.25 + b2 = -36 + 6.25

Reorder the terms:
6.25 + 5b + b2 = -36 + 6.25

Combine like terms: -36 + 6.25 = -29.75
6.25 + 5b + b2 = -29.75

Factor a perfect square on the left side:
(b + 2.5)(b + 2.5) = -29.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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