Question

What should be added to x²+2xy+y² to get 4xy+y²​

Answer 1

Answer:

-x^2+2xy

Step-by-step explanation:

x^2+2xy+y^2

To get 4xy+y^2 we can add -x^2+2xy

x^2+2xy+y^2

-x^2+2xy

_____________

4xy+y^2

_____________

I hope this answer will helps you.

Answer 2

Answer:

( 4xy+y² ) - (x²+2xy+y²)

= 4xy+y² - x²-2xy-y²

= 2xy - x²