eto vi o6te

[{S*E*L*E*N*A}]

y⁴+5y³+30y-36

otg.:
(y²+6)(y-1)(Y+6)

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[M_Velinova]

y⁴+5*y³+30*y-36=
y⁴-36+5*y³+30*y=
(y²-6)*(y²+6)+5*y*(y²+6)=
(y²+6)*(y²-6+5*y)=
(y²+6)*((y²-1+5*y-5)=
(y²+6)*((y-1)*(y+1)+5*(y-1))=
(y²+6)*(y-1)*(y+6)

[{S*E*L*E*N*A}]

blagodarq na vsi4ki 4e mi pomognahte