Question

if(x+y)=4, (x-y)=2, xy=?​

Answer 1

Answer:

3

Explanation:

let x=4-y

and putting value of x in equation (2)

(4-y) -y = 2

4-2y =2

4-2= 2y

2= 2y

1=y

putting Value of y In any equation the result you will get

×+1=4

x=3

and xy= 3×1 = 3