👤
a fost răspuns

Descompuneti in produs de factori ireductibili:

a) (3x+1)³-12x-4

Răspuns :

(a+b)³=a³+3a²b+3ab²+b³
(3x+1)³=(3x)³+3·(3x)²·1+3·3x·1²+1³=27x³+27x²+9x+1
(3x+1)³-12x+4=27x³+27x²+9x+1-12x+4=27x³+27x²-3x+5=
 

Alte intrebari