Respuesta :
Answer:
Option D. i is the correct option.
Step-by-step explanation:
The given expression is in the form of [tex]i^{20+1}[/tex]
expression can be written as [tex]i^{20}.i^{1}[/tex] as pwers get added when multiplied.
Now we know [tex]i^{2}=(-1)[/tex] Or [tex]i=\sqrt({-1})[/tex] then we will try to convert the expression in the form of i².
[tex](i^{2})^{10} .i = (-1)^{10} .i=[(-1)^{2}]^{5}.i=1^{5}.i=1.i=i[/tex]
Therefore option D is the answer.
