Решете уравнение 5x2-8x+3=0
5x2-8x+3=0 D=64-60 = 4 x(1)=(8+2)/10=1 x(2)=(8-2)/10=0.6
5x2-8x=0-3 5x2-8x=-3 5x-8x=-3/2 -3x=-1.5 x=-1.5/-3 x=0.5