Question 458256
y-intercept occurs when x=0, which is the point (0,50)
-x^2+5x+50 can be factored
(-x+10)(x+5)=-x^2 -5x +10x +50
So, x=10 and x=-5 will be the roots.
y=0, so the points will be (-5,0) and (10,0)
A graph is always a good idea.
{{{graph(500,500,-10,15,-10,60,-x*x+5*x+50)}}}