(х+5)(х²+х-6) = (х+5)(х+3)(х-2)
х²+х-6=0
D=1²-4*1*(-6)=1+24=25 D>0
х1=(-1-√25)/(2*1)=-3
х2=(-1+√25)/(2*1)=2
(х+5)(х²+х-6) = (х+5)(х+3)(х-2)
х²+х-6=0
D=1²-4*1*(-6)=1+24=25 D>0
х1=(-1-√25)/(2*1)=-3
х2=(-1+√25)/(2*1)=2