Question

if x2+x/x2=83, then find x-1/x.​

Answer 1

Answer:

-81 is the answer

Step-by-step explanation:

x²+x/x²=83

x²/x² + x/x² = 83

1 + 1/x = 83

1/x = 83 -1

1/x = 82

x = 1/82

put in  1 -x /x

(1/82 - 1)/(1/82 )

= (1 - 82)/82 x 82

= 1 - 82

= -81