First multiply everything inside the brackets by seven
7x^4-42+3
Then solve what you can
7x^4-39
You an't solve it further. Is this what you mean? X to the fourth power?
        
             
        
        
        
The vertices of the image reflected over the line y = x are:
D´( 5 , 2 ),  E´( 4, 6 ) and F´( 3, 3 ). 
So ( 2, -5 ) is incorrect and it could be incorrectly reflected across over the x-axis.
Answer: B) 
        
                    
             
        
        
        
Answer:
A.
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
a=72
Step-by-step explanation:
54/3=18
18*4=72
a=72 when b=4
 
        
             
        
        
        
What do you mean, "solve"?
y = -4(x-2)² + 4 
the line is a parabol with a maximum (2;4)
it's roots are  -4(x-2)² + 4  = 0 => (x-2)² = 1 => x-2 = 1 => x = 3
                                                              => x-2 = -1 => x = 1 
symetrical axe: x = 2
is that all you need?