Hi Candidate,

-5 under root multiplied by Under Root -125 gives an imaginary number called iota 'i' as the Under Root of any negative number yields iota 'i' upon square root.

The value of Under Root -125 is equal to 5i* root 5, and upon multiplying it with -5 it gives -25i* root 5 as the answer.

Hope that this answer helps you. Have a Good Day!!