Question

jldi answer btao koi​

Answer 1

Answer:

${ \red{ = > 5 {x}^{2} + 3 {y}^{2} - 9xy + ( - 2 {x}^{2} + 6 {y}^{2} + 4xy)}} \\ \\ { \blue{ = > 5{x}^{2} + 3 {y}^{2} - 9xy - 2 {x}^{2} + 6 {y}^{2} + 4xy}} \\ \\ { \pink{= > 3 {x}^{2} + 9 {y}^{2} - 5xy}}$