4b^2+8b+12=-5

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Solution for 4b^2+8b+12=-5 equation:


Simplifying
4b2 + 8b + 12 = -5

Reorder the terms:
12 + 8b + 4b2 = -5

Solving
12 + 8b + 4b2 = -5

Solving for variable 'b'.

Reorder the terms:
12 + 5 + 8b + 4b2 = -5 + 5

Combine like terms: 12 + 5 = 17
17 + 8b + 4b2 = -5 + 5

Combine like terms: -5 + 5 = 0
17 + 8b + 4b2 = 0

Begin completing the square.  Divide all terms by
4 the coefficient of the squared term: 

Divide each side by '4'.
4.25 + 2b + b2 = 0

Move the constant term to the right:

Add '-4.25' to each side of the equation.
4.25 + 2b + -4.25 + b2 = 0 + -4.25

Reorder the terms:
4.25 + -4.25 + 2b + b2 = 0 + -4.25

Combine like terms: 4.25 + -4.25 = 0.00
0.00 + 2b + b2 = 0 + -4.25
2b + b2 = 0 + -4.25

Combine like terms: 0 + -4.25 = -4.25
2b + b2 = -4.25

The b term is 2b.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2b + 1 + b2 = -4.25 + 1

Reorder the terms:
1 + 2b + b2 = -4.25 + 1

Combine like terms: -4.25 + 1 = -3.25
1 + 2b + b2 = -3.25

Factor a perfect square on the left side:
(b + 1)(b + 1) = -3.25

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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