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Descompuneti in produs de factori ireductibili:
2x la patrat+ 5x+2=

2x la patrat -5x+2=


Răspuns :

2x²+5x+2= 2x²+4x+x+2=2x(x+2)+(x+2)= (2x+1)(x+2)

2x²-5x+2=2x²-4x-x+2= 2x(x-2)- (x-2)= (2x-1)(x-2)