Question

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

Answer 1

Answer:

(-2xy) should be added

Step-by-step explanation:

x²+y²+2xy + (-2xy)

(+) × (-) = (-)

= x² + y² + 2xy - 2xy

= x² + y²

Hope this helps you!

Answer 2

Answer:

(-2xy) should be added.

hope it will help you