SAT Question fad2f98c: Nonlinear Equations In One Variable And Systems Of Equations In Two Variables answer and explanation with Desmos solution

Choice B is correct. Applying the zero product property to the given equation yields $3x=0$, $x-4=0$, and $x+5=0$. Dividing each side of the equation $3x=0$ by $3$ yields $x=0$. Adding $4$ to each side of the equation $x-4=0$ yields $x=4$. Subtracting $5$ from each side of the equation $x+5=0$ yields $x=-5$. Therefore, the solutions to the given equation are $0$, $4$, and $-5$. Thus, one of the solutions to the given equation is $0$.