Question

9⁻³×9⁻⁶
⁻⁻⁻⁻⁻⁻⁻⁻⁻ =
9⁻¹¹

Answer 1

$frac{9^{-3}*9^{-6}}{9^{-11}} =9^{-3-6+11}=9^2 = 81$

Ответ: 81