Question

x^3+13x^2+13x+3=0 алгебра
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Answer 1

3(x^3+1)+13x•(x+1)=0
3(x+1)•(x^2-x+1)+13x•(x+1)=0
(X+1)•(3(x^2-x+1)+13x)=0
(X+1)•(3x^2+10x+3)=0
(x+1)•(x+3)•(3x+1)=0
x=-1 x=-3 x=-1/3