Раскройте скобки: \( -2\cdot(h+k\,)^2=\)?\( h^{\,2}\) ?\( hk\) ?\( k^{\,2}\)

Задание

Раскройте скобки:

\(\displaystyle -2\cdot(h+k\,)^2=\)[?||-][ ]\(\displaystyle h^{\,2}\) [?|+|-][ ]\(\displaystyle hk\) [?|+|-][ ]\(\displaystyle k^{\,2}\)