Question

if (a^2 + 1)/a =4 find the value of a^3 + 2/a^3​

Answer 1

Answer: 52

Step-by-step explanation:

(a^2 + 1)/a =4

a+1/a = 4

(a+1/a)^3= 4^3

a^3+ 1/a^3 + 3(a+1/a) = 64

a^3+ 1/a^3 + 3 × 4 = 64

a^3+ 1/a^3 = 64 -12= 52