Thực hiên các phép tính (bằng cách hợp lý ,nếu có thể)a\(\left(\frac{3}{7}-\frac{5}{2}-\frac{3}{5}\right)-\left(-\frac{4}{7}-\frac{3}{2}+\frac{2}{5}\right)\) c)\(\left(-\frac{1}{2}\right)^2:\frac{1}{4}-2.\left(\frac{-1}{2}\right)^3\) e)\(\frac{2^9.4^{10}}{8^8}\) b\(\left(\frac{2}{5}\right)^2+5\frac{1}{2}.\left(4,5-2\right)+\frac{2^3}{\left(-4\right)}\) d)\(\sqrt{16}.1\frac{3}{4}+\frac{1}{4}-7\) ...
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Thực hiên các phép tính (bằng cách hợp lý ,nếu có thể)
a\(\left(\frac{3}{7}-\frac{5}{2}-\frac{3}{5}\right)-\left(-\frac{4}{7}-\frac{3}{2}+\frac{2}{5}\right)\) c)\(\left(-\frac{1}{2}\right)^2:\frac{1}{4}-2.\left(\frac{-1}{2}\right)^3\) e)\(\frac{2^9.4^{10}}{8^8}\)
b\(\left(\frac{2}{5}\right)^2+5\frac{1}{2}.\left(4,5-2\right)+\frac{2^3}{\left(-4\right)}\) d)\(\sqrt{16}.1\frac{3}{4}+\frac{1}{4}-7\) f)\(\frac{3}{4}.26\frac{1}{5}-\frac{3}{4}.44\frac{1}{5}\)
\(\left(\frac{3}{7}-\frac{5}{2}-\frac{3}{5}\right)-\left(-\frac{4}{7}-\frac{3}{2}+\frac{2}{5}\right)=\frac{3}{7}-\frac{5}{2}-\frac{3}{5}+\frac{4}{7}+\frac{3}{2}-\frac{2}{5}\)
\(=\left(\frac{3}{7}+\frac{4}{7}\right)+\left(-\frac{5}{2}+\frac{3}{2}\right)+\left(-\frac{3}{5}-\frac{2}{5}\right)\)
\(=1+\left(-1\right)+\left(-1\right)\)
\(=-1\)
Hok tốt nha^^