Question

p³-q³-(p-q)³ what is ans of this

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Answer 1

$p^3-q^3-\left(p-q\right)^3$

$=p^3-q^3-\left(p^3-3p^2q+3pq^2-q^3\right)$

$=p^3-q^3-p^3+3p^2q-3pq^2+q^3$

$=3p^2q-3pq^2$