Question

Va rog ajutati-ma! Nu stiu cum sa mai continui...va rog sa mi-l faceti ca model.

Answer 1

$E(x)=( \frac{2}{x-2} + \frac{x}{x+2} ): \frac{x^2+4}{x^2-x-2} \\\\ E(x)= \frac{2(x+2)+x(x-2)}{(x-2)(x+2)} * \frac{(x-2)(x+1)}{x^2+4} \\\\ E(x)= \frac{2x+4+x^2-2x}{(x-2)(x+2)} *\frac{(x-2)(x+1)}{x^2+4} \\\\ E(x)= \frac{x+1}{x+2}$