3х-x^2=0x(3-x)=0x=03-x=0x=0x=-3
3x-x^2=0
D=3^2-4*(-1)*0=9
x1=(3-3)/(2*(-1))=0x2=(-3-3)/(2*(-1))=6/2=3
3х-x^2=0
x(3-x)=0
x=0
3-x=0
x=0
x=-3
3x-x^2=0
D=3^2-4*(-1)*0=9
x1=(3-3)/(2*(-1))=0
x2=(-3-3)/(2*(-1))=6/2=3