Perform each of the indicated operations in the field extension Q(∛2) of Q
Find the product (3+2∛2-5∛4).(1-∛2+3∛4) and find the multiplicative inverse of 2-∛2+∛4 .
please,I want help with that how can I find the product and multiplicative inverse of field extension I did search for explanation for that but without useful.