Respuesta :

tramserran

Answer: x - 12

Step-by-step explanation:

Area = Length * width

x² - 144 = (x + 12) * width

÷(x + 12)  ÷(x + 12)              

[tex]\frac{x^{2}-144} {x+12}[/tex] = width

[tex]\frac{(x-12)(x+12)} {x+12}[/tex] = width

x - 12 = width