Question

Выполнить действия(развёрнуто). ​

Answer 1

Объяснение:

$( \frac{3}{7} m {}^{3} n) {}^{2} ( - 7mn {}^{2} ) {}^{3} = \left(\frac{3}{7}\right)^{2}\left(m^{3}\right)^{2}n^{2}\left(-7mn^{2}\right)^{3} =\left(\frac{3}{7}\right)^{2}m^{6}n^{2}\left(-7mn^{2}\right)^{3} =\frac{9}{49}m^{6}n^{2}\left(-7mn^{2}\right)^{3} =\frac{9}{49}m^{6}n^{2}\left(-7\right)^{3}m^{3}\left(n^{2}\right)^{3} =\frac{9}{49}m^{6}n^{2}\left(-7\right)^{3}m^{3}n^{6} =\frac{9}{49}m^{6}n^{2}\left(-343\right)m^{3}n^{6} =-63m^{6}n^{2}m^{3}n^{6} =-63m^{9}n^{2}n^{6} =-63m^{9}n^{8}$