Asked by Jackster
                help, I am stuck on this one.
-ã(7c)^2
            
            
        -ã(7c)^2
Answers
                    Answered by
            Reiny
            
    does that say 
-√(7c)^2 ??
in general (√a)^2 = a
so your result would be -7c
    
-√(7c)^2 ??
in general (√a)^2 = a
so your result would be -7c
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