...................................
9х^2-12х+4=0
D=144-4*9*4= 144-144=0
x=12/18=2/3
S={2/3}
(2-3x)(x^2-5x+2)=0
2-3x=0 x=2/3
или x=1
x^2-5x+2=0 x=4
D=25-4*1*2=25-16=9
x=(5+3)/2 x=4
или или
x=(5-3)/2 x=1
S={1;2/3;4}
...................................
9х^2-12х+4=0
D=144-4*9*4= 144-144=0
x=12/18=2/3
S={2/3}
(2-3x)(x^2-5x+2)=0
2-3x=0 x=2/3
или x=1
x^2-5x+2=0 x=4
D=25-4*1*2=25-16=9
x=(5+3)/2 x=4
или или
x=(5-3)/2 x=1
S={1;2/3;4}