A) \[{{p}^{3}}+{{q}^{3}}+{{r}^{3}}\]
B) \[{{p}^{3}}\text{ }+\text{ }{{q}^{3}}\text{ }+\text{ }{{r}^{3}}\text{ }\,3pqr\]
C) \[2\text{ }\left( {{p}^{3}}\text{ }+\text{ }{{q}^{3}}+{{r}^{3}}\text{ }-\text{ }3pqr \right)\]
D) \[{{p}^{3}}\text{ }+\text{ }{{q}^{3}}+\,\,{{r}^{3}}+\,\,2\text{ }\left( pq\,\,+\,\,qr\,\,+\,\,rp \right)\]
E) None of these
Correct Answer: C
Solution :
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