You didn't type the equation correctly.
it can be 2 or more real numbers.
Answer:
Yo
So, if ya wanna solve this question and of course questions alike, ya gotta pay attention to the graph. mean All of these parabolic chart have the domain of R
Step-by-step explanation:
So there ya go
D=R
and now bout the range ya gotta find the vertex, which is:

now pay attention
X=2/–2=–1
y=–(–1)²–2(–1)+3=4
Now the highest point of your parabolic chart is 4 and the lowest point is endless which is (–♾,4]
Well, finally your answer is D
In your equation: a+(-4)=-13
you then add four to each side,
so a= negative 13 plus 4
so a= -9
Answer:

Hope this helps at all. :)