X=4 makes it true 
Thank you hope this helps
        
             
        
        
        
Answer:
a and d?
Step-by-step explanation:
 
        
             
        
        
        
Answer:
either -4 or -5
Step-by-step explanation:
don't trust me on this
 
        
             
        
        
        
Step-by-step explanation:
Part A:
I'm going to assume you meant to write 6x^10 - 96x^2. Based off that assumption you can factor out 6 from both equations as well as x^2.
This is going to give you 
. I
Part B:
if you look at the inside, both of the values are perfect squares (if the exponent is even, it's a perfect square). So the equation can further be rewritten using the difference of squares

If you look at the expression, you'll notice one of the equations can further be rewritten as the difference of squares (x^4 - 4).

 
        
             
        
        
        
Step-by-step explanation:
Let the required number be x. 
According to the given information:

Hence the required number is 31.