Answer:
Step-by-step explanation:
N is 3 bc #of terms minus 1
Exponents go from 3>2>x>none
Can be factored using binomial theorem 
 
        
                    
             
        
        
        
Answer:
(4x+3) (4x-3)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
nth term = 
Step-by-step explanation:
Let us assume that the given sequence is a G.P.
Now, if the first term of the G.P. is a and the common ratio is r, then
Third term =  .......... (1) and
 .......... (1) and  
20th term =  ........... (2)
 ........... (2)
Now, dividing equation (2) with equation (1) we get
 
⇒  
⇒ r = 1.2.
Hence, from equation (1) we get
a(1.2)² = 11
⇒ a = 7.639 (Approx.)
Therefore, the general term of the sequence i.e. nth term =  (Answer)
 (Answer)
 
        
             
        
        
        
Multiplying an odd number of negative factors equals a negative 
-5* 2n -1
Calculate the product 
the answer is -10n - 1