3x^2 - x + 2 = 0
D = (-1)^2 - 4*3*2 = 1 -24
Корней нет .
1)b/1/2=8,4/3
2)a/(2+1/3)=b/(1+1/6)
1. 2b=8,4/3
6b=42/5
b=42/30
b=5/7
2. подставляем b
a/(2+1/3)=(5/7)/(1+1/6)
a/(7/3)=5/7/(7/6)
3a/7=5/7*6/7
3a=30/7
a=10/7=1+3/7
180-х=100
х=180-100
х=80
х-17=40
х=40+17
х=57
х+24=50
х=50-24
х=26