Question

what should be added to 2x+xy+2y^2 to obtain 3x^2+5xy​

Answer 1

Answer:

$3x^2+4xy-2x-2y^2$ should be added

Step-by-step explanation:

To find the number that has to be added :

$(3x^2+5xy )- (2x+xy+2y^2)\\=3x^2+5xy - 2x -xy-2y^2\\=3x^2+4xy-2x-2y^2$