Question

E(x) = (x+1) la patrat minus 4/x inmultit cu x la patrat/ x la patrat minus x

Answer 1

[tex]E(x)= \frac{(x+1)^{2}-4 }{x}* \frac{ x^{2} }{ x^{2}-x } \\ E(x)= \frac{(x+1-2)(x+1+2)}{x}* \frac{ x^{2} }{x(x-1)} \\ E(x)= \frac{(x-1)(x+3)}{x}* \frac{x}{x-1} \\ E(x)=x+3 [/tex]