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
