Уравнения: 5-11х= -2 9-24х= -16 6-4=0

5-11х= -2x²
2x²-11x+5=0
D=121-40=81
x1=11-9/10=2/10=0.2
x2=11+9/10=20/10=2

9x²-24х= -16
9x²-24x+16=0
k=12
D=144-144=0;D=0
x=24:18=4/3

6x²-4=0
6x²=4
x²=2/3
x=+-√2/3