Question

Calculati:
E(x)=( 2 supra x-1 - 1 supra x+2) : (x+3)(x-1) supra x la a doua -2x+1

Answer 1

[tex]E(x)= (\frac{2}{x-1}- \frac{1}{x+2}): \frac{(x+3)(x-1)}{ x^{2} -2x+1} \\ E(x)=( \frac{2(x+2)-x+1}{(x-1)(x+2)} )* \frac{(x-1)^2}{(x+3)(x-1)} \\ E(x)= ( \frac{2x+4-x+1}{(x-1)(x+2)} )* \frac{(x-1)^2}{(x+3)(x-1)} \\ E(x)=\frac{x+5}{(x-1)(x+2)} * \frac{(x-1)^2}{(x+3)(x-1)} \\ E(x)= \frac{x+5}{(x+2)(x+3)} [/tex]