Question

factories x³ + 1 / x³​

Answer 1

Answer:

x³ + 1 / x³

={x + (1 / x)}^3 -3x*(1/x){x + (1 / x)}

={x + (1 / x)}^3 -3{x + (1 / x)}

={x + (1 / x)}[{x + (1 / x)}^2 -3]