Question

a= cube root 4 + cube root of 2 + 1, find 3/a + 3/a^2 + 1/ a^3

Answer 1

Step-by-step explanation:

cube root of 4=4^(1/3)=2^(2/3)

cube root of 2=2^(1/3)

a=2^(2/3) +2^(1/3) +1

3/a + 3/a^2 + 1/a^3= (3a^2+3a+1) /a^3