4b^2=2b-9

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Solution for 4b^2=2b-9 equation:


Simplifying
4b2 = 2b + -9

Reorder the terms:
4b2 = -9 + 2b

Solving
4b2 = -9 + 2b

Solving for variable 'b'.

Reorder the terms:
9 + -2b + 4b2 = -9 + 2b + 9 + -2b

Reorder the terms:
9 + -2b + 4b2 = -9 + 9 + 2b + -2b

Combine like terms: -9 + 9 = 0
9 + -2b + 4b2 = 0 + 2b + -2b
9 + -2b + 4b2 = 2b + -2b

Combine like terms: 2b + -2b = 0
9 + -2b + 4b2 = 0

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

Divide each side by '4'.
2.25 + -0.5b + b2 = 0

Move the constant term to the right:

Add '-2.25' to each side of the equation.
2.25 + -0.5b + -2.25 + b2 = 0 + -2.25

Reorder the terms:
2.25 + -2.25 + -0.5b + b2 = 0 + -2.25

Combine like terms: 2.25 + -2.25 = 0.00
0.00 + -0.5b + b2 = 0 + -2.25
-0.5b + b2 = 0 + -2.25

Combine like terms: 0 + -2.25 = -2.25
-0.5b + b2 = -2.25

The b term is -0.5b.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5b + 0.0625 + b2 = -2.25 + 0.0625

Reorder the terms:
0.0625 + -0.5b + b2 = -2.25 + 0.0625

Combine like terms: -2.25 + 0.0625 = -2.1875
0.0625 + -0.5b + b2 = -2.1875

Factor a perfect square on the left side:
(b + -0.25)(b + -0.25) = -2.1875

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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