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Se considera expresia E(x)=[tex] \frac{x}{3} + \frac{2x+6}{3x} : ( \frac{1}{x} + \frac{3}{ x^{2} } ) [/tex] . Aratati ca E(x)=x
VA ROG MULT !!!!


Răspuns :

 1/x+3/x²=(x+3)/x²
2x+6)/3x :(x+3)/x²=2*(x+3)/3x*x²(x+3)=2x/3
x/3  +2x/3  =x  x=/0
*=ori