English: So, taking note on this expansion or binomial expansion, what we have is (1+𝑥)^(−𝑛) is this, if we try to look at this and take this 𝑛 is equal to 1/2, so we will precisely get this because here we have this 1/2 which is matching there.
Telugu: కాబట్టి, ఈ విస్తరణ లేదా బైనామియాల్ విస్తరణను గమనిస్తే, మన దగ్గర ఉన్నది 1−𝑛𝑥+((𝑛(𝑛+1))/1⋅2) 𝑥²−((𝑛(𝑛+1)(𝑛+2))/1⋅2⋅3)𝑥³+⋯.