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a=½;m+1,b=½;m+2,c=½;m+3 ∴a²;+2ab+b²;-2ac+c²;-2bc =(a+b-c)²; =(1/2m+1+1/2m+2-1/2m-3)²; =(1/2m)²; =m²;/4
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