Answer:
(x+8)(x+1)
Step-by-step explanation:
i am sorry but i didn't understand after the equation. 
but i think i got what you trying to ask so this is 
i got (x+8)(x+1)
 
        
                    
             
        
        
        
Answer:
Using ∣x∣>a⇒x<−a or x>a, we get
∣3x−7∣>4⇒3x−7<−4 or 3x−7>4
⇒3x<3 or 3x>11⇒x<1 or x> 
3
11
 
⇒x∈(−∞,1)∪( 
3
11
 ,∞).
 
        
                    
             
        
        
        
Answer:
square: (9x^8)^2= 81x^16
square root: (9x^8)^1/2 = 3x^4
Step-by-step explanation:
the ^ mean that the following num should be like this ⁸
 
        
             
        
        
        
Answer:
$400  OR
 OR 
Step-by-step explanation:
$400 stays the same, 72 cents is 72/100. Simplify and voila
 
        
                    
             
        
        
        
Answer: y=66
I hope it helps you!