Question

a+1/a=1 hole a3+1=kato​

Answer 1

˙·٠•●♥ a+1/a=3

taking cube on both sides the equal becomes

(a+1/a)^ 3=3^3

by using the formula

[(a+b)^3 = a3 + 3ab(a+b)+b3]

a3+(a) (1/a) (a+1/a) + (1/a)^3=9

a3 +b3 + (a+1 /a) =9

As we know that (a+1/a) = 3

so ,

a3 +1/a3+3(3) =9

a3+1/a3+9=9

a3+1/a3 = 9-9

a3 +1/a3=0 ✔✔

hope this helps u

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