Answer:
The answer is 6256 of this question 
 
        
                    
             
        
        
        
Its 18....................................
        
             
        
        
        
Answer: No the students work is not correct. Because you are using distribution. Which means that 3 has to multiply the y2 and 2 not just the y2! And after you distribute it you need to simplify!
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
   f(x) = (x -(-3))(x -(-4))
Step-by-step explanation:
The function can be written as the product of binomial terms whose values are zero at the given zeros.
   (x -(-3)) is one such term
   (x -(-4)) is another such term
The product of these is the desired quadratic function. In the form easiest to write, it is ...
   f(x) = (x -(-3))(x -(-4))
This can be "simplified" to ...
   f(x) = (x +3)(x +4) . . . . simplifying the signs
   f(x) = x^2 +7x +12 . . . . multiplying it out