\(a.\)
\(x:\left(\frac{3}{4}\right)^3=\left(\frac{3}{4}\right)^2\)
\(\Rightarrow x=\left(\frac{3}{4}\right)^2.\left(\frac{3}{4}\right)^3\)
\(\Rightarrow x=\left(\frac{3}{4}\right)^5\)
Vậy : \(x=\left(\frac{3}{4}\right)^5\)
\(b.\)
\(\left(\frac{2}{5}\right)^5.x=\left(\frac{2}{5}\right)^8\)
\(\Rightarrow x=\left(\frac{2}{5}\right)^8:\left(\frac{2}{5}\right)^5\)
\(\Rightarrow x=\left(\frac{2}{5}\right)^3\)
Vậy : \(x=\left(\frac{2}{5}\right)^3\)
a/ x : ( 3/4 )3= ( 3/4 )2
=> x = ( 3/4 )2. ( 3/4 )3
=> x = ( 3/4 )5
vậy x = ( 3/4 )5
b/ ( 2/5 )5. x = ( 2/5 )8
=> x = ( 2/5 )8: ( 2/5 )5
=> x = ( 2/5 )3
vậy x = ( 2/5 )3
