[-1/3] mux2 +[-1/3] mux3*27+[-2017/2018] 03/08/2021 Bởi Allison [-1/3] mux2 +[-1/3] mux3*27+[-2017/2018]
Đáp án: $\begin{array}{l}{\left( { – \frac{1}{3}} \right)^2} + {\left( { – \frac{1}{3}} \right)^3}.27 + \left( { – \frac{{2017}}{{2018}}} \right)\\ = \frac{1}{9} – \frac{1}{{{3^3}}}{.3^3} – \frac{{2017}}{{2018}}\\ = \frac{1}{9} – 1 – \frac{{2017}}{{2018}}\\ = \frac{{2018 – 9.2018 – 9.2017}}{{18162}}\\ = \frac{{ – 34297}}{{18162}}\end{array}$ Bình luận
Đáp án:
$\begin{array}{l}
{\left( { – \frac{1}{3}} \right)^2} + {\left( { – \frac{1}{3}} \right)^3}.27 + \left( { – \frac{{2017}}{{2018}}} \right)\\
= \frac{1}{9} – \frac{1}{{{3^3}}}{.3^3} – \frac{{2017}}{{2018}}\\
= \frac{1}{9} – 1 – \frac{{2017}}{{2018}}\\
= \frac{{2018 – 9.2018 – 9.2017}}{{18162}}\\
= \frac{{ – 34297}}{{18162}}
\end{array}$