Respuesta :

Annder

Step-by-step explanation:

5(1+x)

= 5 + 5x

= 5x + 5

.......

Answer:

(−∞,∞)

Step-by-step explanation:

5(1+x)=5x+5

5*1=5

(5+x)=5x+5

5*x=5x

5+5x=5x+5

5-5=0

5x-5x=0