limx→1x^3-1/x^2-1要过程哇，谢谢哈

Question

limx→1x^3-1/x^2-1
要过程哇，谢谢哈

Answer 1

limx→1x^3-1/x^2-1
=limx→1[(x-1)(x^2+x+1)]/[(x-1)(x+1)]
=limx→1(x^2+x+1)/(x+1)
=3/2
过程补充了,就是先分解因式,再约分,再求极限.