Answer:
−11b^2+8b−4
Step-by-step explanation:
−4b2+6b−9−7b2+2b+5
 
Simplify by adding terms.
11b2+8b−4
 
        
             
        
        
        
Answer 3 cans of tennis balls unless there is tax 
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer: 15cm^2
Step-by-step explanation:
0.5*10*3=15
 
        
                    
             
        
        
        
<h3>
Therefore, in  =15 ways can these 2 position be filled .
=15 ways can these 2 position be filled .</h3>
Step-by-step explanation:
Given a club has 6 members. From these member ,the position of president and vice president have to be filled.
Therefore, in  =15 ways can these 2 position be filled
=15 ways can these 2 position be filled