Question

x²+1/x² =83, find x³-1/x³​

Answer 1

Answer:

756

Step-by-step explanation:

(x−

x

1

)

2

=x

2

+

x

2

1

−2

(x−

x

1

)

2

=81

(x−

x

1

)

2

=9

2

x−

x

1

=9

(x−

x

1

)

3

=9

3

x

3

−

x

3

1

−3(x−

x

1

)=729

x

3

−

x

3

1

=729+27=756