Question

please let me know fast it's urgent​

Answer 1

Answer:

2

Explanation:

(x+y)²=9

x²+2xy+y²=9

5+2xy=9

2xy=4

xy=2

Answer 2

Explanation:

Given

x+y=3 , x^2 +y^2=5

We know that (x+y)^2= x^2 + y^2 +2xy

(3)^2 = 5+2xy

9= 5+2xy

9-5= 2xy

4=2xy

4/2 = xy

So xy = 2