Question

7. 1 + x + xy + x^y​

Answer 1

Step-by-step explanation:

Take xy=a then, a/x+y=1/5 = > 5a=x=y - (1) a/x-y=1/7 => 7a=x-y -(2) by adding (1) and (2) 7a=x-y 5a=x+y =>12a=2x