\(\Rightarrow x=\left(-\dfrac{9}{5}\right)^8\cdot\left(-\dfrac{5}{9}\right)^8=\left[\left(-\dfrac{9}{5}\right)\left(-\dfrac{5}{9}\right)\right]^8=1^8=1\)
Tìm x, biết:
a) \(\left(-\dfrac{5}{9}\right)^{10}\) : x = \(\left(\dfrac{-5}{9}\right)^8\)
b) x ; \(\left(\dfrac{-5}{9}\right)^8\) = \(\left(\dfrac{-9}{5}\right)^8\)
c) x3 = -8
\(\dfrac{1}{4}\)+\(\dfrac{8}{9}\)≤\(\dfrac{x}{36}\)<1-(\(\dfrac{3}{8}\)-\(\dfrac{5}{6}\))
5$-\frac{5}{3}+\frac{5}{9}-\frac{5}{27}$ \(8-\dfrac{8}{3}+\dfrac{8}{9}-\dfrac{8}{27}\) trên nhau nha
Giúp mình với
a,\(\dfrac{-8}{9}\)-(\(\dfrac{6}{5}\)-\(\dfrac{8}{9}\))
b, \(\dfrac{-4}{9}\)+\(\sqrt{\dfrac{9}{16}}\)-\(\dfrac{4}{5}\).\(\dfrac{-1^2}{2}\)+25%
c,\(\dfrac{2}{3}\)+(\(\dfrac{-3}{4}\)).\(\dfrac{4}{9}\)
d,16\(\dfrac{3}{4}\) - (-\(\dfrac{6}{5}\)) - 28\(\dfrac{3}{4}\):(-\(\dfrac{6}{5}\))
\(\left[\left(\dfrac{-3}{8}+\dfrac{11}{23}\right):\dfrac{5}{9}+\left(\dfrac{-5}{8}+\dfrac{12}{23}\right):\dfrac{5}{9}\right].\dfrac{11}{235}\)
\(\dfrac{-3}{4}\) ( \(\dfrac{8}{9}\) - x ) + \(\dfrac{3}{5}\) = \(\dfrac{-2}{3}\) ( \(\dfrac{1}{2}\) )
a)\(\dfrac{-5}{8}-2.\dfrac{25}{10}+\dfrac{1}{2}\)
b)\(4\dfrac{5}{9}:\left(\dfrac{-5}{7}\right)+5\dfrac{4}{9}:\left(\dfrac{-5}{7}\right)\)
a) \(\dfrac{3}{4}=\dfrac{3x}{20}\) b) \(\dfrac{1,2}{x+3}=\dfrac{5}{4}\) c) \(\dfrac{x^2}{32}=\dfrac{9}{8}\)
tìm số x thỏa mãn
\(x:\left(\dfrac{2}{9}-\dfrac{1}{5}\right)=\dfrac{8}{16}\)
