Respuesta :

-2.083333333333

Step-by-step explanation:

I got a rational number which is -2.083333333

-2x-10x=25

-12x=25

x=-2.083333

Ver imagen Plu4

Answer:

Step-by-step explanation:

[tex]-x^{2} -10x-25=0 SE CAMBIA LOS SIGNOS\\x^{2} +10X+25=0 (se utiliza (a^{2} + 2 ab^{2} + b^{2}), asi factorizando la expresion).\\(x+5)^{2} =0\\x+5=0\\x= -5[/tex]