Tolong donk kak bantuin dgn cara'a no.19 yg dilingkarin.bsk dikumpulin

-5x^2 + 16x - 12 = 0
Kali (-1)
5x^2 - 16x + 12 = 0
(5x - 6)(x - 2)
Karena x15x2 - 10x1 = 5(2) - 10(6/5) = -2