Question

E(x)= (x+2)' + x+2 supra x(x+5) + 6

x e R \ { -2, -3 }

Answer 1

E ( x) = ( x² + 4x + 4 + x + 2) supra ( x² + 5x + 6)
         = x² + 5x + 6 supra x² + 5x + 6
         = 1, dupa simplificare