Question

what should be added to " x power 2 + xy + y power 2 " to obtain " 2xpower 2 + 3xy" .​

Answer 1

Answer:

x²+2xy-y²

Step-by-step explanation:

let m be added to x²+xy+y² to obtain 2x²+3xy

m = 2x²+3xy-(x²+xy+y²)

m = 2x²+3xy-x²-xy-y²

m = x²+2xy-y²