Question

Solve it in the copy.

Answer 1

I don't know the answer for this question

Answer 2

$we \: know \: that \: \: \: \: \\ if \: \: \: a + b + c = 0 \\ then \: {a}^{3} + {b}^{3} + {c}^{3} = 3abc \\ so \: in \: this \: case \: is \: same \: ....... \\ ({p - q})^{3} + ( {q - r})^{3} + ({r - p})^{3} \\ = 3pqr \: ......ans$