Respuesta :

Step-by-step explanation:

[tex]Area \: of \: room = length \times width \\ = (x + 2) \times (x - 5) \\ = {x}^{2} + (2 - 5)x + 2( - 5) \\ = {x}^{2} + ( - 3)x - 10 \\ = ( {x}^{2} - 3x - 10) \: {unit}^{2} [/tex]