Step-by-step explanation:
Let A be the point at which the graph y=x²+3x-18
intersect the x-axis
As the graph intersects x-axis it's coordinate will be (x,0)
putting the value of y =0
x²+3x-18=0
x²+6x-3x-18=0
x(x+6)-3(x+6)=0
(x+6)(x-3)=0
x=-6, or,x=3
The point A maybe (-6,0) or (3,0)
