Question

expansion
I will make you a brain list ​

Answer 1

Answer:

one is answer you can cancel x cube remaining is 1

Answer 2

Answer:

(X+1/X)³=x³+1/x³+3x(1/X)(X+1/X)

2³=x³+1/x³+3(2)

8=x³+1/x³+6

x³+1/x³=8-6

x³+1/x³=2