Question

Answer 1

Làm thật chi tiết giúp mình à 

Answer 2

\(a.x^2=\dfrac{25}{64}\\ =>x^2=\left(\pm\dfrac{5}{8}\right)^2< =>x=\pm\dfrac{5}{8}\\ b.x^3=\dfrac{8}{125}\\ < =>x^3=\left(\dfrac{2}{5}\right)^3\\ < =>x=\dfrac{2}{5}\)

Answer 3

\(a,x^2=\dfrac{25}{64}\Rightarrow x^2=\left(\dfrac{5}{8}\right)^2\Rightarrow x=\pm\dfrac{5}{8}\)

\(b,x^3=\dfrac{8}{125}\Rightarrow x^3=\left(\dfrac{2}{5}\right)^3\Rightarrow x=\dfrac{2}{5}\)