How can I calculate a Delta expression in wolframalpha with Pro Account ?

[leodecastroferreira (Leonardo de castro)]

Hi, I need to solve a question like this (image), How can I do this in wolframalpha ?

[bsimpson141421356 (Bill Simpson)]

Perhaps

http://www.wolframalpha.com/input/?i=Limit%5B+%28x%5E3-3x%2B2%29%2F%28x-1%29%2C+x-%3E+1%5D
or
http://www.wolframalpha.com/input/?i=lhopital%27s+rule

[Vitaliyk (Vitaliy Kaurov)]

Have you checked example pages for LIMITS ? Examples tell you how to type it in.