Answer:
n²-7n-21
Explanation:
Given the expression:
First, open the brackets:
Next, bring the like terms together and simplify:
Step-by-step explanation:
First, let's move the 
to the right-hand side so we can determine what constant we'll need on the left-hand side to complete the square:
From here, since the coefficient of the 
term is 
, we know the square will be 
(since 
it's half of ).
To complete this square, we will need to add 
to both sides of the equation:
Now we can take the square root of both sides to figure out the solutions to :
Answer:
.85
Step-by-step explanation:
Start at the end.
The 5 makes the 7 an 8, which makes the 8 an 9, which makes the 4 a 5.
Leonard method is likely to to give an accurate estimate of the mean since his sample was randomly selected from campers at his camp.
hope this helped
Answer
-19
Step-by-step explanation:
AS WE NEED TO FIND THE DIFF SO -8-11=-19
