1). х²-5х+6=0
х²-2х-3х+6=0
х(х-2)-3(х-2)=0
(х-2)(х-3)=х
х-2=0 х-3=0
х=2 х=3
или
х²+5х+6=0
х²+2х+3х+6=0
х(х+2)+3(х+2)=0
(х+2)(х+3)=0
х+2=0 х+3=0
х=-2 х=-3
дальше сам
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Answers & Comments
1). х²-5х+6=0
х²-2х-3х+6=0
х(х-2)-3(х-2)=0
(х-2)(х-3)=х
х-2=0 х-3=0
х=2 х=3
или
х²+5х+6=0
х²+2х+3х+6=0
х(х+2)+3(х+2)=0
(х+2)(х+3)=0
х+2=0 х+3=0
х=-2 х=-3
дальше сам