Question

The value of (i+1)(i-1) is​

Answer 1

Answer:

(i+1)(i-1)

i(i-1) +1(i-1)

i²-i+i-1

i²+1.

I hope my answer helps you ☺☺

Answer 2

Answer:

$(i^2 - 1)$

explanation:

$Formula: (a + b)(a - b) = a^2 - b^2$