Question

if x:y =2:1 then (x²-y²):(x²+y²) is​

Answer 1

Answer:

3:5

Step-by-step explanation:

x=2 and y=1

then (x²-y²):(x²+y²)

     = (2²-1²):(2²+1²)

     = (4-1):(4+1)

     = 3:5