Question

Find x³-1/x³ if x²+1/x²=18​

Answer 1

Answer:

1 - 17√17

Step-by-step explanation:

x²+1/x²=18

x²+1=18x²

x=√1/17

now put the value of x in given question,

so,

(√1/17)³ -1/(√1/17)

1-17√17