∫x²/[(1-x)^100] dx=∫[(x-1)²+2(x-1)+1]/[(x-1)^100] dx =∫1/[(x-1)^98] dx + 2*∫1/[(x-1)^99] dx + ∫1/[(x-1)^100] dx = -1/97[(x-1)^97] dx - 2/98[(x-1)^98] dx - 1/99[(x-1)^99 + C