You can put this solution on YOUR website!
this is either visualised as
. The second is easier to work with, since
is a big number, whereas
is small...so easier, in my opinion.
means what is the number "a" such that a*a*a*a=4? You should LEARN this sort of thing.
Hopefully you will know b if b*b=4? --> b is 2.
OK, so what about c*c=2? --> answer is
. Check it on your calculator.
So we have