Question

If x-1/x=3 find the value of xcube-1/x cube

Answer 1

Answer:

xcube-1/x cube=xcube-1/xcube-3(x-1/x)

therefore x=36

Step-by-step explanation:

substitute values

3cube=xcube-1/x cube-3(3)

xcube-1/x cube=27+9

=36

Answer 2

Answer:

Step-by-step explanation:

x cube-1/xcube=(x-1/x)^3+3(x-1/x)