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2x (x+3)+(x-1)la a 2.a =(x+2)

Răspuns :

2x(x+3)+(x-1)la a 2 a=x+2
2xX+2x3+X+1 la a 2 a=x+2
2xX+6+X+1la a 2 a=x+2
3X+6 la a 2 a=x+2