Question

please solve this question​

Answer 1

Answer:

(3^-7 / 3^-10 ) * 3^-5

=3^(-7+10) * 3^-5

=3^3 * 3^-5

=3^(3-5)

=3^-2

=1/3²

=1/9

Answer 2

Answer:

$\frac{ {3}^{ - 7} }{ {3}^{ - 10} } \times {3}^{ - 5}$

3^3 × 3^-5 =3^-2 = 1/9