Question

What is the square of the imaginary number `isqrt5`?

Answer 1

`(isqrt5)^2=-5`

Explanation:

Square of unit imaginary number `i` i.e. `i^2` is `-1`.

Using this we can find the squaree of imaginary number `isqrt5`

`(isqrt5)^2`

= `i^2(sqrt5)^2`

= `-1xx5`

= `-5`