Question

If x+y=3, x square + y square = 5 then xy is​

Answer 1

Answer:

ans.

(x + y )^2 = x^2 + y^2 + 2xy

= ( 3 ) ^2 = 5 + 2xy

= 9 = 5 + 2xy

= 9 -5 = 2xy

= 4 = 2xy

= xy = 2 {ans. }

Answer 2

Answer: xy=2

Step-by-step explanation:

x+y=3(given)

x^2+y^2= 5(given)

(x+y)^2=x^2+y^2+2xy

substitute the values.

(3)^2=(5)+2xy

9=5+2xy

2xy=9-5

2xy=4

xy=4/2

xy=2