Question

HELPP PLEASEEE !!!!!!!

Answer 1

Simplify !

Answer 2

\[i ^{2} =-1\]\[=>\sqrt{-1} = \sqrt{i ^{2}} = i\] For the denominator
(2-4i) -(5+3i) = 2-4i-5-3i = -3 -7i

Therfpore the simplified version is
i/(-3 -7i) or -I/3+7i

Answer 3

\[\sqrt{-1} = \sqrt{i ^{2}} = i\]