Найду корень уравнения: 0,6x+4=0,2x
3*x x --- + 4 = - 5 5
(3/5)*x+4 = (1/5)*x
3/5x+4 = (1/5)*x
3/5x+4 = 1/5x
x = -4 / (2/5)
x1 = -10
сумма
0 - 10
=
-10
произведение
1*-10
x1 = -10.0