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In geometry, the circumference is the perimeter of a circle or ellipse. That is, the circumference would be the arc length of the circle, as if it were opened up and straightened out to a line segment. More generally, the perimeter is the curve length around any closed figure.
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x-y=?
so 
?+y=x
which means

i hope this helps
 
        
             
        
        
        

Hmmm... Strange very very strange. The bars around the w represent absolute value, and whatever is inside those bars always yields a positive answer. So, |-87| = 87 or |-8| = 8 or even |5|=5
 
        
             
        
        
        
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Step-by-step explanation:
yes ,great job lxwxh
 
        
             
        
        
        
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Step-by-step explanation:
hello : 
(4x+3)(2x-5)=0
4x+3=0 or 2x-5=0
x= -3/4 or x=5/2