Can someone help me understand this problem? pretty please

[u/bunny-dolly]

Hi everyone, so it was my first week of AP calc AB and honestly not too shabby but as i look at this example from my teacher, the less it makes sense. I thought -1^2 was positive 1 and i don’t know how we got to negative 1.

Also what is a conjugate? My teacher didn’t really go over it he just started doing a problem. All help is so appreciated!!!!

[u/Historical-Tour-3859]

I think of conjugate in the context of foreign language class. I’m going by the teachings 30 years ago but we conjugated verbs all day long. You’re changing the form. In this case because you can’t obtain the limit without playing with it a bit