Answer: 16
Step-by-step explanation:

Let's complete the square.



Answer:
5
Step-by-step explanation:
Replace 20 instead of m
20/4=5
Answer:
4
Step-by-step explanation:
The distance between the two points is (-1,-4) - (-5,-4)
Answer:
-
Step-by-step explanation:
A root with square root or under root is only obtained when we take the square root of both sides. Remember that when we take a square root, there are two possible answers:
- One answer with positive square root
- One answer with negative square root
For example, for the equation:

If we take the square root of both sides, the answers will be:

Only getting one solution with square root is not possible. Solutions with square root always occur in pairs.
For given case, the roots are 6 and
. Therefore, the 3rd root of the polynomial function f(x) had to be -
It seems you made error while writing option B, it should be - square root of 5.