计算.(1)(x的三次方+x²+x+1)/(x+1) (2)(ab²-a²b)/(a-b)

问题描述:

计算.(1)(x的三次方+x²+x+1)/(x+1) (2)(ab²-a²b)/(a-b)

(1)(x的三次方+x²+x+1)/(x+1) =[﹙x³+x²﹚+(x+1)]/(x+1)= [x²﹙x+1﹚+﹙x+1﹚]/﹙x+1﹚=﹙x+1﹚﹙x²+1﹚/﹙x+1﹚=x²+1(2)(ab²-a²b)/(a-b)=ab﹙b-a﹚/﹙a-b﹚=...