Question

cac ban giup mk nhe

x la phan so toi gian

\(x^3=-\frac{27}{343}\)

Answer 1

\(x^3=-\frac{27}{343}\)

\(x^3=\left(-\frac{3}{7}\right)^3\)

\(x=-\frac{3}{7}\)

Chúc bạn học tốt

 

Answer 2

Ta có : \(x^3=-\frac{27}{343}\)

            \(\Rightarrow x=\sqrt[3]{-\frac{27}{343}}\)

             \(\Rightarrow x=-\frac{3}{7}\)

Vậy \(x=-\frac{3}{7}\)

Answer 3

\(x^3=-\frac{27}{343}\Leftrightarrow x=\sqrt[3]{\frac{-27}{343}}\Leftrightarrow x=\frac{-3}{7}\)

Answer 4

\(\frac{-3}{7}\)