Respuesta :

Answer:

[tex]x_1=-8, x_2=-9[/tex]

Step-by-step explanation:

[tex]x^2+17=-72[/tex]

[tex]x^2+17x+72=0[/tex]

[tex](x+8)(x+9)=0[/tex]

[tex]x_1=-8, x_2=-9[/tex]

Step-by-step explanation:

x^2+17x=−72

x^2+17x+72=0

(x+8)(x+9)=0

x+8=0   x+9=0

x=-8,-9