Question

what should be added to x ²+ xy + Y ² to obtained 2 x ² +
3xy​

Answer 1

Answer:

you should add x^2 + 2xy - y^2 to make it 2x^2 + 3xy

Answer 2

Step-by-step explanation:

Let the number that should be added be X.

x²+xy+y²+ X= 2x²+3xy

-2x²+x²-3xy+xy+y²+X=0

-x²-2xy+y²+X=0

X= x²+2xy-y²

Now, by putting the value of x and y you will find the number which should be added.

Glad to help