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svoateti factor comun a) 5x(x+2)+(x+2)^2-3(x+2);


Răspuns :

5x(x+2)+(x+2)^2-3(x+2) =

= (x+2) × (5x + x + 2 - 3) =

= (x+2) × (6x-1)
5x(x+2)+(x+2)² -3(x+2)= (x+2)(5x+x+2-3)=(x+2)((6x-1)