$(a^2-b^2)a=(a^2\; -\; b^2)a\; =$ .........

a (a-b) + b (b-c) + c (c – a) = ……………

83 $\times \backslash times$ 77 = ………………

${304}^2=304^2\; =$ ..........

(m + n) (m – n) = ……………

$9k^2+24kl+16l^2=9k^2+24\backslash ,kl+16\backslash ,l^2=$

$abc\times a^{2}bc=abc\backslash times\; a^2bc=$ ..........

$(p+q)(p^2-pq+q^2)=(p+q)(p^2-pq+q^2)=$ ...........

$m^3+m^{2}n-n^{2}m-n^3=m^3+m^2n-n^2m-n^3=$ ........

$-5p^2\times (-2p)=-5p^2\; \backslash times\; (-2p)\; =$