Answer:
4x-6
Step-by-step explanation:
Two times 2 equals 4 and 2 times 3 equals 6
 
        
                    
             
        
        
        
Answer:
12
Step-by-step explanation:
 
        
                    
             
        
        
        
I don’t understand you are asking
        
             
        
        
        
Answer:
 or
 or 
Step-by-step explanation:
Add all fractions:
 +
 +  +
 +  =
 = 
Simplify if needed:
 =
 = 
 
        
             
        
        
        
Answer:
f(x) =  2x^2 - 6x - 20.
Step-by-step explanation:
(-2, 0) and (5, 0)  are 2 zeroes of the function so we can write the function as
f(x) =  a(x + 2)(x - 5)   where a is a constant.
Now as (4, -12) is a point on the graph:
-12 = a(4 + 2)(4 - 5)
-12 = a * 6 * -1
-6a = -12
a = 2.
So f(x) = 2(x + 2)(x - 5)
f(x) =  2x^2 - 6x - 20.