Answer:
9m^2+17m-9
Step-by-step explanation:
 
        
             
        
        
        
Answer:
it is a 90 degree angle
Step-by-step explanation:
because the little square in the corner 
 
        
                    
             
        
        
        
40/100×120=4/1×12=48. 1/4×200=50. so 1/4 of 200 is greater than 40% of 120.
        
                    
             
        
        
        
Answer:
im Pretty sure x
Step-by-step explanation: Distribute:
=4x2+−12x+9+−9x2+12x+−4
Combine Like Terms:
=4x2+−12x+9+−9x2+12x+−4
=(4x2+−9x2)+(−12x+12x)+(9+−4)
=−5x2+5
Answer:  −5x2+5
 
        
             
        
        
        
Answer:
yes
Step-by-step explanation: