Aloha :)
$$\phantom{=}(2x+5)\cdot (4x^2+20x+27)\cdot e^{x^2+5x+3}+(8x+20)\cdot e^{x^2+5x+3}$$$$=(2x+5)\cdot\boxed{(4x^2+20x+27)}\cdot e^{x^2+5x+3}+(2x+5)\cdot\boxed{4}\cdot e^{x^2+5x+3}$$$$=(2x+5)\cdot\left(\;\boxed{(4x^2+20x+27)}+\boxed{4}\;\right)\cdot e^{x^2+5x+3}$$$$=(2x+5)\cdot(4x^2+20x+31)\cdot e^{x^2+5x+3}$$