Can someone check my answer please i don't know if I am doing this right

x^ (2):x= sum (x^2 )+ (x)=x^2+x diff (x^2 )-(x)= (x^2-x) Product (¡¼x)¡½^2 (x)=x^2^x

sum ok

diff ok
prod (x^2)(x) = x^3

x^2^x is not even a polynomial!
If x=3,
(x^2)(x) = 9*3 = 27
x^2^x = 3^(2^3) = 3^8 = 6561