Question

if (m/n)^3/8 +(m/n)^3/8=9 then find the value of (m/n)^3/4 +(m/n)^3/4​

Answer 1

let m/n =x

then 2* x^3/8 = 9

then x =(9/2)^8/3

taking same in another

we get 2* x^3/4 =  

        and x =(9/2)^8/3

then answer is (9/2)^8/3*3/4

⇔   2*  ( 9/2)^2

⇔81/4