[-1/3] mux2 +[-1/3] mux3*27+[-2017/2018]

[-1/3] mux2 +[-1/3] mux3*27+[-2017/2018]

0 bình luận về “[-1/3] mux2 +[-1/3] mux3*27+[-2017/2018]”

  1. Đáp án:

    $\begin{array}{l}
    {\left( { – \frac{1}{3}} \right)^2} + {\left( { – \frac{1}{3}} \right)^3}.27 + \left( { – \frac{{2017}}{{2018}}} \right)\\
     = \frac{1}{9} – \frac{1}{{{3^3}}}{.3^3} – \frac{{2017}}{{2018}}\\
     = \frac{1}{9} – 1 – \frac{{2017}}{{2018}}\\
     = \frac{{2018 – 9.2018 – 9.2017}}{{18162}}\\
     = \frac{{ – 34297}}{{18162}}
    \end{array}$

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