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Descompune in factori
a) 2x²+5x-3
b) 5x²+3x-2


Răspuns :

a]  2x2+5x-3=2x2+6x-x-3=2x[x+3]-[x+3]=[x+3][2x-1]
b] 5x2+3x-2=5x2+5x-2x-2=5x[x+1]-2[x+1]=[x+1][5x-2]