81 Expresa en forma de una sola potencia. \( \begin{array}{lll}\text { a) }\left(2^{2}\right)^{5} & \text { e) }\left((-7)^{-4}\right)^{6} & \text { i) }\left((-4)^{9}\right)^{3} \\ \text { b) }\left((-3)^{5}\right)^{-2} & \text { f) }\left(2^{-1}\right)^{-2} & \text { j) }\left((-3)^{-2}\right)^{-7} \\ \text { c) }\left[\left(-\frac{3}{5}\right)^{2}\right]^{5} & \text { g) }\left[\left(-\frac{4}{5}\right)^{7}\right]^{-3} & \text { k) }\left[\left(-\frac{3}{7}\right)^{-2}\right]^{4} \\ \text { d) }\left[\left(\frac{1}{2}\right)^{3}\right]^{-2} & \text { h) }\left[\left(\frac{2}{5}\right)^{-1}\right]^{-3} & \left.\text { l) }\left[\left(-\frac{1}{4}\right)^{-3}\right]^{-2}\right]^{5}\end{array} \)
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