The dividend already has a separate distributed factor of 2.
_________________________
2b-1 | 4b^2 0*b -3
|
2b
_________________________
2b-1 | 4b^2 0*b -3
| 4b^2 -2b
_________________
0 2b
2b 1
_________________________
2b-1 | 4b^2 0*b -3
| 4b^2 -2b
_________________
0 2b.... -3
2b -3
-----------
0 0
Quotient found,
.
Your original factored expression is
.
Simplify or reduce, find
.