PV = vRT
T = PV/vR
T = (13877,7 * 10) / (66,8 * 8.31)
T = 250
-x²+5x-6=0
Δ=25-24=1 ,√Δ=1
X1=(-5-1)/-2=-6/12=3
X2=(-5+1)/-2=-4/-2=2