Question

If x/y+ y/x =-1 then the value of x3-y3 is

Answer 1

Step-by-step explanation:

x/y+y/x=-1

x²+y²/xy=-1

x²+y²=-xy

x²+y²+xy=0

x³-y³=(x-y)(x²+y²+xy)

x³-y³=(x-y)×0

x³-y³=0