Answer:

Step-by-step explanation:
<u>Step 1: Distribute </u>


<u>Step 2: Combine Like Terms
</u>



Answer: 
Answer:
The answer would be -9 and -3 which would be B and D
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
X is less than -7 because the open circle indicates that x is not -7
Answer:
64
Step-by-step explanation:
So here you're just completing the square. the equation you gave is simply:
where c is the unknown value we're solving for. Whenever you complete the square, you add (b/2)^2
The reason for this, is because whenever you write a binomial as a perfect square it's in the form:
and this binomial expands out to become: 
If we write the second term of the binomial as b/2 we get:

which simplifies to:

and as you can see the last term is (b/2)^2, which is why we need to add that part for it to be a perfect square.
So we would need to add (16/2)^2 = 8^2 = 64
This way, we can express it as a perfect square binomial:
which expands out to: 
Answer:
B. (x-5)²+(y+1)² = 49
Step-by-step explanation:
An equation of a circle with center (h, k) and radius r is

We have all given information we need. Our h is 5 - Our k is -1 and our radius is 7
Substitute these values in

So the answer is B choice.