Раскройте скобки: 27. (3m + 4n)²

Question

\((3m+4n)^2=(3m)^2+2\cdot3m\cdot4n+(4n)^2=9m^2+24mn+16n^2\).

Ответ: \(9m^2+24mn+16n^2\).

Accepted Answer

\((3m+4n)^2=(3m)^2+2\cdot3m\cdot4n+(4n)^2=9m^2+24mn+16n^2\).

Ответ: \(9m^2+24mn+16n^2\).