Question

(x+y-¹)²÷(1+x-¹y-¹)​

Answer 1

xy/y-x

Explanation:

(x^-1+y^-1)/(x^-2- y^-2)=

(1/x+1/y)/(1/x^2-1/y^2)=

x+y/xy * x^2y^2/y^2-x^2=

xy/y-x

hope this will help u