Question

СКОЛЬКО РАВНО, СКАЖИТЕ ПЖ

Answer 1

$( \frac{1}{9} ) {}^{2} + ( \frac{2}{3} ) {}^{3} = \frac{1}{81} + \frac{8}{27} = \frac{1 + 24}{81} = \frac{25}{81} \\ ( \frac{5}{9} ) {}^{2} - ( \frac{1}{3} ) {}^{2} = \frac{25}{81} - \frac{1}{9} = \frac{25 - 9}{81} = \frac{16}{81}$