Question

x cube + 1 upon x cube if x plus one upon x is equal to 3​

Answer 1

Step-by-step explanation:

x + 1/x = 3

Cube karne per

x³ + 1/x³ + 3(x)(1/x)(x+1/x) = 27

x³ + 1/x³ + 3*3 = 27

x³ + 1/x³ = 27-9=18