4b^2+b+9=0

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Solution for 4b^2+b+9=0 equation:


Simplifying
4b2 + b + 9 = 0

Reorder the terms:
9 + b + 4b2 = 0

Solving
9 + b + 4b2 = 0

Solving for variable 'b'.

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

Divide each side by '4'.
2.25 + 0.25b + b2 = 0

Move the constant term to the right:

Add '-2.25' to each side of the equation.
2.25 + 0.25b + -2.25 + b2 = 0 + -2.25

Reorder the terms:
2.25 + -2.25 + 0.25b + b2 = 0 + -2.25

Combine like terms: 2.25 + -2.25 = 0.00
0.00 + 0.25b + b2 = 0 + -2.25
0.25b + b2 = 0 + -2.25

Combine like terms: 0 + -2.25 = -2.25
0.25b + b2 = -2.25

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.
0.25b + 0.25 + b2 = -2.25 + 0.25

Reorder the terms:
0.25 + 0.25b + b2 = -2.25 + 0.25

Combine like terms: -2.25 + 0.25 = -2
0.25 + 0.25b + b2 = -2

Factor a perfect square on the left side:
(b + 0.5)(b + 0.5) = -2

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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