Question

If ( x+y)=3 (x² +y² ) =5,then find xy​

Answer 1

4+1=5

Step-by-step explanation:

x+y=3

x=3-y

3-y+y=3 (putting x value x=3-y)

y=1

x=2. (putting y value x=3-1)

(x²+y²)=5

(2²+1²)=5

4+1=5

5=5. (lhs=rhs)