Answer:
a^4+3a^2-3b^2
Step-by-step explanation:

 
        
             
        
        
        
I’m not 100% sure but I think it’s 14/49
 
        
                    
             
        
        
        
The function
... f(x) = (x+2)/(x-1) = 1 + 3/(x-1)
is symmetrical about the line y=x, hence is its own inverse.
We can evaluate the desired derivative directly.
... f'(x) -3/(x-1)²
so f'(2) is
... f'(2) = -3/(2-1)²

 
        
             
        
        
        
Answer:
512
Step-by-step explanation:
since its a cube, all the side lengths are even, so its just 8^3 or 8*8*8
 
        
             
        
        
        
Answer: 11/21 
Step-by-step explanation: Subtract: 67 - 26 = 6 · 67 · 6 - 2 · 76 · 7 = 3642 - 1442 = 36 - 1442 = 2242 = 2 · 112 · 21 = 1121
For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of the both denominators - LCM(7, 6) = 42. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 7 × 6 = 42. In the next intermediate step , cancel by a common factor of 2 gives 1121.  
hope this helps