The number 16 has four fourth roots. find them.
I know the answers are:
2
-2
2i
-2i
But I don't know why. please explain.
Uhh. I think this is pretty simple.
The fourth root of 16 is 2. Those are the ways to write 2 in forms of i.
Because 16 is a perfect 4th power.
Hope this helped!
Yay!
I'm sure it's 2 and -2 because 2^4=16 and -2^4=16 also but sometimes people don't count -2 so if this is homework i'm not sure whether you should put in 2,-2 or both
