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\(\left(\dfrac{1}{9}\right)^{2005}.9^{2005}-96^2:24^2=\left(\left(\dfrac{1}{9}\right)^{2005}.9^{2005}\right)-\left(96^2:24^2\right)\)
\(=\left(\dfrac{1^{2005}}{9^{2005}}.9^{2005}\right)-\left(96^2:24^2\right)=\left(1^{2005}\right)-\left(\left(4.24\right)^2:24^2\right)\)
\(=1-\left(4^2\right)=1-16=-15\)
\(\left(\frac{1}{9}\right)^{2015}.9^{2015}-96^2:24^2=1^{2015}-4^2=1-16=-15\)
\(16\frac{2}{7}:\left(\frac{-3}{5}\right)-28\frac{2}{7}:\left(\frac{-3}{5}\right)=\left(16\frac{2}{7}-28\frac{2}{7}\right):\left(\frac{-3}{5}\right)=-12.\frac{-5}{3}=20\)
\(\left(-2\right)^3.\left(\frac{3}{4}-0,25\right):\left(2\frac{1}{4}-1\frac{1}{6}\right)=-8.\frac{1}{2}:\frac{13}{12}=-8.\frac{1}{2}.\frac{12}{13}=\frac{-48}{13}\)
\(a)=\frac{7}{25}+\frac{4}{13}-\frac{5}{2}+\frac{18}{25}-\frac{17}{13}\)
\(=1-1-\frac{5}{2}\)
\(=-\frac{5}{2}\)
ban ơi là \(\frac{1^{2005}}{8}\)hay \(\left(\frac{1}{8}\right)^{2005}\)
1/8^2005.9^1005-96^2:24^2
=9/8^2005-4^2
den doan nay thi em chiu roi em moi hoc lop 6 thoi a