Question

(1+x)^-1=?????????????????​

Answer 1

Answer: (1 - x)

Step-by-step explanation:

(1+x)^n = 1 + nx

when n < 1

In the given question, n= -1

Therefore we can apply the binomial approximation to obtain the answer.

(1 + x)^-1 = 1 + (-1)x

= 1 - x