The perfect square 
can be expanded as follows:
So, we have to think of the term 
as 
, which implies 
.
Thus, we have to add 
, i.e. 16, to complete the perfect square:
Answer:
C
Step-by-step explanation:
the answer is C because √8 can be rewrite as 8^1/2
A is wrong because 8 is another number
B is wrong because 4 is not the square root of 8
D is wrong because 8^2 = 64
Answer: 9 1/16
nine and one sixteenth
Step-by-step explanation:
Substitute x = 3 and y = 4 into the equation:
3x + 1/4^y
= 3(3) + 1/4^(2)
Then solve using the order BEDMAS (brackets, exponenets, division, multiplication, addition, subtraction).
= 3(3) + 1/4^(2)
= 3(3) + 1/16
= 9 + 1/16
= 9 1/16
