Question

What would be added to 2x^2+2xy+2y^2 to obtain 4x^2+6xy

Answer 1

Answer:

2x^2-2y^2-4xy

Step-by-step explanation:

2x^2+2y^2=-2xy_(1)

4x^2+0=-6xy_(2)

substract (1) from (2)

2x^2-2y^2-4xy