Question

If x+1/x=5, then what is the value of x⁴-1/x⁴?​

Answer 1

x=1, then the value is 0

x=5, then the value is 624/625

Explanation:

Instead of x, we plugin 1.

`(1^(4)-1 )/(1^(4) ) = (1-1)/(1) = (0)/(1) =0`

Instead of x, we plugin 5.

`(5^(4)-1 )/(5^(4) ) = (625-1)/(625) = (624)/(625)`