Question

if x²+1/x=10/3 find x-1/x and x³-1/x³. the answer for x-1/X is 83 and for x³-1/x³ is 728/ 27
I know the answer but I need line by line explaination​

Answer 1

Answer:

If y =1 +2(1) = 3 , x= 18-3(1) = 15.

If y= 1 + 2(2) = 5, x= 18 – 3(2) = 12.

If y= 1 + 2(3) = 7, x = 18 – 3(3)