Answer:
Double it, aka multiply 
Step-by-step explanation:
 
        
             
        
        
        
Answer:
   c.  (x^2+1)(x^2+a)-a = x^2(x^2+a+1)
Step-by-step explanation:
You can use FOIL or the distributive property to expand the product of binomials, Then collect terms and factor out the common factor.
   (x^2+1)(x^2+a)-a
   = x^2(x^2 +a) +1(x^2 +a) -a
   = x^4 +ax^2 +x^2 +a -a
   = x^4 +ax^2 +x^2
   = x^2(x^2 +a +1) . . . . . matches choice C
 
        
                    
             
        
        
        
Answer:
16=d-12/14
We simplify the equation to the form, which is simple to understand  
16=d-12/14
Simplifying:
16=d-0.857142857143
We move all terms containing d to the left and all other terms to the right.  
-1d=-0.857142857143-16
We simplify left and right side of the equation.  
-1d=-16.8571428571
We divide both sides of the equation by -01 to get d.  
d=16.8571428571
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
<u>The correct answer is B. 82</u>
Step-by-step explanation:
The numbers are 56 and 26.  Let's prove it:
56/5 = 11 and a remainder of 1
56/6= 9 and a remainder of 2
26/5 = 5  and a remainder of 1
26/6 = 4 and a remainder of 2
56 + 26 = 82
<u>The correct answer is B. 82</u>