1) х1+х2=-b/a
x1=x2+8
x2+x2+8=12
2*x2=4
x2=2 x1=10
x1*x2=c/a
20=m
2)
(x1+x2)^2-2*x1*x2=10
16-2*x1*x2=10
-2*x1*x2=-6
x1*x2=3
p=3
1) х1+х2=-b/a
x1=x2+8
x2+x2+8=12
2*x2=4
x2=2 x1=10
x1*x2=c/a
20=m
2)
(x1+x2)^2-2*x1*x2=10
16-2*x1*x2=10
-2*x1*x2=-6
x1*x2=3
x1*x2=c/a
p=3