think you know math?

Ok, the exponent 2.2, can be written down as a fraction as a whole number. So 4 to the exponent 2.2 is the same as 4 squared X 4(exponent 1/5). As .2=1/5. So you now have 4 squared=16, this leaves the fraction part of the exponent left, which is 1/5.
So you got 16 to the exp 1/5. Well the 1/5 means take 16 and get the 5th root of it....which I have no frickin idea!! LOL...For example if you got a question 32 to the exponent 1/5, the answer would be 2 (2x2x2x2x2=32)