Toán Lớp 7: 2^3+3.(-1/2)^6-(1/2)^2. 4+[(-2)^2:1/2]:8
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Toán Lớp 7: 2^3+3.(-1/2)^6-(1/2)^2. 4+[(-2)^2:1/2]:8
Comments ( 2 )
{2^3} + 3{\left( { – \dfrac{1}{2}} \right)^6} – {\left( {\dfrac{1}{2}} \right)^2}.4 + \left[ {{{\left( { – 2} \right)}^2}:\dfrac{1}{2}} \right]:8\\
= 8 + 3.\dfrac{1}{{64}} – \dfrac{1}{4}.4 – 8:8\\
= 8 + \dfrac{3}{{64}} – 1 – 1\\
= \dfrac{{387}}{{64}}
\end{array}\]