P^2/QR+Q^2/PR+R^2/PQ
= (P^3+Q^3+R^3)/PQR
= ((P+Q+R)(P^2+Q^2+R^2-PQ-QR-PR)+3PQR)/PQR
= 3
On 2011-9-15 13:29, rahul sharma wrote:
hw?
On Thu, Sep 15, 2011 at 10:57 AM, Tamanna Afroze <afroze...@gmail.com
<mailto:afroze...@gmail.com>> wrote:
yah the ans is 3
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