real numbers please help!

i have this funny feeling that the answer is right in front of my face i just cant see it and it is begining to bug me.

so i have tried over and over again to do this problem but it is supposed to end up with an answer without a square root sign or a fraction. but it is supposed to have the i sign in it? i am so lost

ok this is the question:

it is supposed to be to the tenth root but i had to change the format because i do not know how to write roots on this forum.

i know i should know this but i cant seem to figure it out.

thank you so much for your time and help i really need it

sorry guys i just figured it out i was reading the problem wrong (because it is a computer based program i am doing my algebra 2 on) and they are square rooted not to the tenth root.

which of course makes a whole lot more sense but i seem to like to make problems a whole lot more complicated then they are.

but thank you for your time