Question

5^-3*5^-9 дробь 5^-11

Answer 1

$\frac{5^{-3}*5^{-9}}{5^{-11}} = \frac{5^{-3-9}}{5^{-11}}= \frac{5^{-12}}{5^{-11}}=5^{-12+11}=5^{-1}= 1/5=0.2$

Answer 2

$\frac{5^{-3}*5^{-9}}{5^{-11}}=5^{-3-9-(-11)}=5^{-3-9+11}=5^{-1}= \frac{1}{5}$