Question

What should be added to x2+xy+y2 to obtain 2y2+3xy ?

Answer 1

HERE IS UR ANSWER

(2x2 + 3xy) - (x2 + xy + y2)

= 2x2 + 3xy - x2 - xy - y2

= 2x2 - x2 + 3xy - xy - y?

= x2 + 2xy - y2

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