Answer:
a
Step-by-step explanation:
hope this helps
 
        
             
        
        
        
Answer:
x²-9=x²-3²=(x+3)(x-3)
Step-by-step explanation:
use formula
a²-b²=(a+b)(a-b)
 
        
             
        
        
        
Answer:
srry guys i dont know this
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer: y=mx+b
Step-by-step explanation:
The slope-intercept form is y=mx+b, where m is the slope and b is the y-intercept. y=mx+b