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Coolalina122
a fost răspuns

Restringeti completind adecvat:
a)1+3x+3x²+x³

Răspuns :

Ana1235001
1+3x+x²(3x +1)=(3x+1)(x²+1)
Vlad2000
= x³ +3x² +3x +3 -2 = x³ +x² +2x²-2 +3x+3 = x² (x+1) +2(x+1)(x-1) +3(x+1)
= (x+1)(x² +2x-2+3)= (x+1)(x²+2x+1)=(x+1)(x+1)²= (x+1)³