Multiply (length) times (width). For a square, both numbers will be the same.
        
                    
             
        
        
        

so... what does that give you for the discriminant?
if it's a negative value, no solutions
if it's a positive value, two solutions
if it's 0, one solution
 
        
             
        
        
        
Answer:
an expression is numbers, symbols and operators (such as + and ×) grouped together that show the value of something and a equation is an equation says that two things are equal. (7+2=9) this is an equation
 
        
             
        
        
        
Answer:
Rounded to the nearest ones: 30000
Rounded to the nearest tenths: 30000.5
Rounded to the nearest hundredths: 30000.49
Rounded to the nearest thousandths: 30000.490
Rounded to the nearest ten-thousandths: 30000.4898