Задача Задача №3659209
А
А
\(a^{-6}(a^5)^2=a^4=5^4=\boxed{625}\)
\(\dfrac{a^{21}a^{-12}}{a^3}=a^6=2^6=\boxed{64}\)
\(\sqrt{(-b)^8b^2}=\sqrt{2^{10}}=2^5=\boxed{32}\)
\(\dfrac1{2^{-7}}\cdot\dfrac1{2^9}=2^{-2}=\boxed{\dfrac14}\)
\(\dfrac1{5^{-3}}\cdot\dfrac1{5^4}=5^{-1}=\boxed{\dfrac15}\)
