6xkuadrat - 28xy + 30ykuadrat faktorkan! tolong dijawab

[tex]6 {x}^{2} - 28xy + 30 {y}^{2} - - > \div 2 \\ 3 {x}^{2} - 14xy + 15 {y}^{2} \\ (3x - 5y)(x - 3y)[/tex]