Question

what should be added to x²+y² to get 2x² + 3xy​

Answer 1

Answer:

we have to add  x² + 3xy-y² with x²+y² to get 2x² + 3xy​.

Step-by-step explanation:

We have to find, what should be added to x²+y² to get 2x² + 3xy​.

Lets say, we have to add z.

Hence, (x²+y²) + z = (2x² + 3xy)​

or, z = (2x² + 3xy)​-(x²+y²)

or, z = 2x² + 3xy​-x²-y²

or, z = 2x²​-x² + 3xy-y²

or, z = x² + 3xy-y²

Hence, the answer is  x² + 3xy-y².