Answer:
The equation has a maximum value with a y-coordinate of -21.
Step-by-step explanation:
Given

Required
The true statement about the extreme value
First, write out the leading coefficient

means that the function would be a downward parabola;
Downward parabola always have their vertex on top of the parabola and as such, the function has a maximum value.
The maximum value is:

Where:

So, we have:



Substitute
in 


<em>Hence, the maximum is -21.</em>
Answer:
I think it is D
Step-by-step explanation:
Answer:AlF3
Step-by-step explanation:
The next 2 answers are: -2/5 and -3/5
Answer:
x(2x + 4) = (x + 2)2
Step-by-step explanation:
Answer on edg.