Answer:
Step-by-step explanation:
y=x²+6x+5
=(x²+6x+(6/2)²)-(6/2)²+5
=(x+3)²-9+5
=(x+3)²-4
The axis of symmetry is x+3=0
or x=-3
when x=-3,f(x)=-4
vertex is (-3,-4)
Domain :-∞<x<∞
or (-∞,∞)
Range:[-4,∞)
