#1
х^2-5х-9х+45
х×(х-5)-9х+45
х(х-5)-9(х-5)
(х-5)×(х-9)
#2
-6х^2+5х-6х+5
-х(6х-5)-6х+5
-х(6х-5)-(6х-5)
-(6х-5)(х+1)
#1
х^2-5х-9х+45
х×(х-5)-9х+45
х(х-5)-9(х-5)
(х-5)×(х-9)
#2
-6х^2+5х-6х+5
-х(6х-5)-6х+5
-х(6х-5)-(6х-5)
-(6х-5)(х+1)