If x ,y are positive integers, such that ln(x+y)=lnx +lny ,then the value of the expression x^2 + y^2 is equal to:
Α. 169 Β. 100 c. 25 d. 16 Ε. 8
I started using ln laws:
x+y=xy
i applied both sides with squares and got here:
x^2 +y^2 =xy(xy-2)
and now im stuck!
please help
Α. 169 Β. 100 c. 25 d. 16 Ε. 8
I started using ln laws:
x+y=xy
i applied both sides with squares and got here:
x^2 +y^2 =xy(xy-2)
and now im stuck!
please help