Question

$( \frac{2}{3})^{2}$
$( \frac{5}{7})^{2}$
$(-\frac{3}{a})^{2}$
$( \frac{b}{8})^{3}$
помогитьи​

Answer 1

1) 4/9
2) 25/49
3) 9/а^2
4) b^3/512