$=\frac{(2x+5)(x+3)}{x^{2}+6x+9}$
$=\frac{(2x+5)(x+3)}{(x+3)^{2}}$
$=\frac{(2x+5)(x+3)}{(x+3)(x+3)}$
$=\frac{2x+5}{x+3}$