х2+3х+2=0D=9-8=1х1=(-3+1)/2=-1х2=(-3-1)/2=-2х2+3х+2=(х+1)(х+2)((х-1)*(х+1)-(1-х))/(х+1)(х+2)=(х2-1-1+х)/(х+1)(х+2)=(х2-2+х)/(х+1)(х+2)х2-2+х=0D=1+8=9х1=(-1+3)/2=1х2=(-1-3)/2=-2(х2-2+х)/(х+1)(х+2)=(х-1)(х+2)/(х+1)(х+2)=(х-1)/(х+1)
х2+3х+2=0
D=9-8=1
х1=(-3+1)/2=-1
х2=(-3-1)/2=-2
х2+3х+2=(х+1)(х+2)
((х-1)*(х+1)-(1-х))/(х+1)(х+2)=(х2-1-1+х)/(х+1)(х+2)=(х2-2+х)/(х+1)(х+2)
х2-2+х=0
D=1+8=9
х1=(-1+3)/2=1
х2=(-1-3)/2=-2
(х2-2+х)/(х+1)(х+2)=(х-1)(х+2)/(х+1)(х+2)=(х-1)/(х+1)