Respuesta :

kousarrulbreaker

Answer:

Step-by-step explanation:

(2x+5)(x−9)=2x2−x−45

2x2−13x−45=2x2−x−45

2x2−13x−45−2x2=2x2−x−45−2x2

−13x−45=−x−45

−13x−45+x=−x−45+x

−12x−45=−45

−12x−45+45=−45+45

−12x=0

−12x /−12 = 0 /−12

x=0