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If a+b+c=2s, then [s2 + (s - a)2+(s - b)2+(s - c)2]/(a2+b2+c2) is,

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If a+b+c=2s, then [s<sup>2</sup> + (s - a)<sup>2</sup>+(s - b)<sup>2</sup>+(s - c)<sup>2</sup>]/(a<sup>2</sup>+b<sup>2</sup>+c<sup>2</sup>) is,





 
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