Question

Зделайте дам 39 баллов.

Answer 1

$(2 \times \frac{1}{3}) {}^{2} - \frac{4}{9}$
$\frac{2}{3} {}^{2} - \frac{4}{9}$
$\frac{2}{3} \times \frac{2}{3} = \frac{4}{6} = \frac{2}{3}$
$\frac{2}{3} - \frac{4}{9} = \frac{6}{9} - \frac{4}{9} = \frac{2}{9}$
=========================================
$(1 \times \frac{1}{2} ) {}^{3} + \frac{5}{8}$
$\frac{1}{2} \times \frac{1}{2} \times \frac{1}{2} = \frac{1}{8}$
$\frac{1}{8} + \frac{5}{8} = \frac{6}{8} = \frac{3}{4}$
=========================================
$3 \frac{5}{9} +( \frac{2}{3}) {}^{2}$
$\frac{2}{3} \times \frac{2}{3} = \frac{4}{9}$