b+3(5b^2+12)=0

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Solution for b+3(5b^2+12)=0 equation:


Simplifying
b + 3(5b2 + 12) = 0

Reorder the terms:
b + 3(12 + 5b2) = 0
b + (12 * 3 + 5b2 * 3) = 0
b + (36 + 15b2) = 0

Reorder the terms:
36 + b + 15b2 = 0

Solving
36 + b + 15b2 = 0

Solving for variable 'b'.

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

Divide each side by '15'.
2.4 + 0.06666666667b + b2 = 0

Move the constant term to the right:

Add '-2.4' to each side of the equation.
2.4 + 0.06666666667b + -2.4 + b2 = 0 + -2.4

Reorder the terms:
2.4 + -2.4 + 0.06666666667b + b2 = 0 + -2.4

Combine like terms: 2.4 + -2.4 = 0.0
0.0 + 0.06666666667b + b2 = 0 + -2.4
0.06666666667b + b2 = 0 + -2.4

Combine like terms: 0 + -2.4 = -2.4
0.06666666667b + b2 = -2.4

The b term is b.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.06666666667b + 0.25 + b2 = -2.4 + 0.25

Reorder the terms:
0.25 + 0.06666666667b + b2 = -2.4 + 0.25

Combine like terms: -2.4 + 0.25 = -2.15
0.25 + 0.06666666667b + b2 = -2.15

Factor a perfect square on the left side:
(b + 0.5)(b + 0.5) = -2.15

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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