Answer:
second choice
Step-by-step explanation:





Let x = 5:



Since using x = 5 gives the square root of a negative number, 5 is not in the domain of the composition of the functions.
Answer: second choice
 
        
             
        
        
        
Answer:
Only one extreme value of f(x) is possible.
Step-by-step explanation:
We are given the quadratic function of independent variable x which is f(x) = x² - 7x - 6 ......(1)
Now. the condition for extreme values of f(x) is 
Hence, differentiating both sides of equation (1) with respect to x, we get 
 = 0
 = 0
⇒ x = 3.5.
So there is only one value of x for which f(x) has extreme value which is x = 3.5.
Therefore, only one extreme value of the given function is possible. (Answer)
 
        
             
        
        
        
Answer:

Step-by-step explanation:
√a^4 is the same as:
√a × √a × √a × √a
group them as 2 pairs of 
(√a × √a) × (√a × √a)
which makes
a × a
which is the same as 
 
        
             
        
        
        
Answer:
a number less then 6 is the anser so the 1st one
 
        
             
        
        
        
The answer would be a mathematical phrase. Hope that helped.