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Savasveta74
a fost răspuns

(3x+1)la puterea3
multumesc anticipat


Răspuns :

[tex]{(3x+1)}^3=(3x+1)^2(3x+1)[/tex]
[tex]=(9x^2+6x+1)(3x+1)[/tex]
[tex]=27 x^3+27 x^2+9 x+1[/tex]