-1phan 2 tat ca mu 3 + -7 phan 6 – 7 phan 8 20/08/2021 Bởi Ivy -1phan 2 tat ca mu 3 + -7 phan 6 – 7 phan 8
\(\begin{array}{l}{\left( {\frac{{ – 1}}{2}} \right)^3} + \left( {\frac{{ – 7}}{6}} \right) – \frac{7}{8} = \frac{{ – 1}}{8} – \frac{7}{6} – \frac{7}{8}\\ = \left( {\frac{{ – 1}}{8} – \frac{7}{8}} \right) – \frac{7}{6}\\ = – 1 – \frac{7}{6}\\ = – \frac{{13}}{6}\end{array}\) Bình luận
($\frac{-1}{2}$)³+$\frac{-7}{6}$ -$\frac{7}{8}$ =$\frac{-1}{8}$ + $\frac{7}{8}$ =$\frac{3}{4}$ Bình luận
\(\begin{array}{l}{\left( {\frac{{ – 1}}{2}} \right)^3} + \left( {\frac{{ – 7}}{6}} \right) – \frac{7}{8} = \frac{{ – 1}}{8} – \frac{7}{6} – \frac{7}{8}\\ = \left( {\frac{{ – 1}}{8} – \frac{7}{8}} \right) – \frac{7}{6}\\ = – 1 – \frac{7}{6}\\ = – \frac{{13}}{6}\end{array}\)
($\frac{-1}{2}$)³+$\frac{-7}{6}$ -$\frac{7}{8}$
=$\frac{-1}{8}$ + $\frac{7}{8}$
=$\frac{3}{4}$