Question

If x²+1/x²=102
evaluate x³-1/x³​

Answer 1

Answer:

x-1/x=10

Step-by-step explanation:

(x-1/x)²=x²+1/x²-2,

then

(x-1/x)²=102-2,

(x-1/x)²=100,

then

(x-1/x)=√100,

x-1/x=10