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Cum descompun asta: 3x^2 +5x + 2

Răspuns :

3x^2+5x+2=3x^+3x+2x+2=3x(x+1)+2(x+1)=(x+1)(3x+2)
3x²+5x+2=0
3x²+3x+2x+2=0
3x(x+1)+2(x+1)=0
(x+1)(3x+2)=0