Question

a+1/a=2 then value of a^3+1/a^3 wil bea

Answer 1

Answer:

a+1/a =2

cubing on both the sides

(a+1/a)^3 =2^3

a^3+(1/a)^3+3(a+1/a)=8

a^3+1/a^3 +3×2=8

a^3+1/a^3+6=8

a^3+1/a^3=8-6

a^3+1/a^3=2