Answer:
x=-8
Step-by-step explanation:

on squaring both sides

either x-2=0  or  x+8=0
either x=2 or x=-8
Putting x=2 in original equation, we get
 
7=7 hence, it is not an extraneous solution
Putting x=-8 in original equation

i.e. 3=-3
Hence, x=-8 is an extraneous solution (since it doesn't satisfy the original equation)
 
        
                    
             
        
        
        
3/8+x=1
x=5/8
A 1 inch button is 5/8 inches longer than a 3/8 inch button.
 
        
             
        
        
        
A) AED 4000
4000 x .10= AED 400 therefore 400 is 10% of 4000
        
             
        
        
        
I think -6 switches to -3