\(\dfrac{6^{15}\cdot9^{10}}{3^{34}\cdot2^{13}}\\ =\dfrac{2^{15}\cdot3^{15}\cdot\left(3^2\right)^{20}}{3^{34}\cdot2^{13}}\\ =\dfrac{2^{15}\cdot3^{15}\cdot3^{20}}{2^{13}\cdot3^{34}}\\ =\dfrac{2^{15}\cdot3^{35}}{2^{13}\cdot3^{34}}\\ =2^2\cdot3\\ =12\)
\(\frac{6^{^5}x9^{10}}{3^{34}x2^{13}}\)
\(\frac{6^{15}\cdot9^{10}}{3^{34}\cdot2^{13}}\)= ?
(69x210+1210):(219x273+15x49x94) = ?
Thực hiện phét tính B=\(\dfrac{155-\dfrac{10}{7}-\dfrac{5}{11}+\dfrac{5}{23}}{403-\dfrac{26}{7}-\dfrac{13}{11}+\dfrac{13}{23}}+\dfrac{\dfrac{-3}{5}-\dfrac{3}{13}+0,9}{\dfrac{2}{5}+\dfrac{2}{13}-\dfrac{6}{10}}\)
\(\dfrac{15}{34}-\dfrac{7}{21}+\dfrac{19}{34}-\dfrac{15}{17}-\dfrac{2}{3}\)
a) 8^10+4^10/8^4+4^11
b) 2^13 x9^4/6^3 x8^3
Giúp mình nha ( ^..^) thanks
\(\dfrac{11}{8}.\left[\left(-\dfrac{5}{11}:\dfrac{13}{8}-\dfrac{5}{11}:\dfrac{13}{15}\right)+\dfrac{-6}{33}\right]+\dfrac{-3}{4}\)
\(\dfrac{15}{12}+\dfrac{5}{13}-\dfrac{3}{12}-\dfrac{18}{13}-\dfrac{1}{3}\)
\(14.\dfrac{3}{2}+\dfrac{6}{5}:\left(\dfrac{-2}{5}\right)\)
\(\sqrt{\dfrac{1}{4}+\dfrac{2}{3}-\left(\dfrac{1}{3}\right)^2}\)
\(\dfrac{x}{5}\)=\(\dfrac{y}{-3}\) và x2 + y = 34
tim x1,x2,x3,...,x9 biết
x1-1/9=x2-2/8=x3-3/7=...=x9-9/1 va x1+x2+x3+...+x9=90
