(8b^3-6)/(2b-1) long division
8b^3 - 6 8b^3 - 4b^2 ===> 4b^2 _____________ 4b^2 - 6 4b^2 - 2b ===> 2b ___________ 2b - 6 2b - 1 __________ ===> 1 5= 4b^2 + 2b + 1 + 5/(2b-1)
