Question

what should be added to x^2-3xy+4y^2 to get 2x^2+7xy-3y^2 ​

Answer 1

Answer:

x² + 10xy - 7y²

Step-by-step explanation:

( 2x² + 7xy - 3y² ) - ( x² - 3xy + 4y² ) =

= 2x² + 7xy - 3y² - x² + 3xy - 4y² =

= ( 2x² - x² ) + ( 7xy + 3xy ) + ( - 3y² - 4y² ) = x² + 10xy - 7y²