Question

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Answer 1

\(d,=9^{2017}\left(9-1\right):9^{2017}=8\\ e,=\dfrac{11\cdot3^{29}-3^{30}}{2^2\cdot3^{28}}=\dfrac{3^{29}\left(11-3\right)}{2^2\cdot3^{28}}=\dfrac{3\cdot8}{2^2}=6\\ f,=\dfrac{2^{10}\cdot3^8+2\cdot2^9\cdot3^9}{2^{10}\cdot3^8+2^8\cdot3^8\cdot2^2\cdot5}=\dfrac{2^{10}\cdot3^8\left(1+3\right)}{2^{10}\cdot3^8\left(1+5\right)}=\dfrac{4}{6}=\dfrac{2}{3}\)