Tìm x thuộc Z biết: (-5/3)^3 { "@context": "https://schema.org", "@type": "QAPage", "mainEntity": { "@type": "Question", "name": " Tìm x thuộc Z biết: (-5/3)^3" frac{-125}{27}="" frac{4}{7}$=">$" -4,6="" 0,57$=">" ∈="" -4;="" -3;-2;="" -1;="" 0}",="" 11:54:26="" #comment-255545",="" ngocdiep",="" "ngocdiep"="" ]="" <="" script="">
ta có $ (\frac{-5}{3})^3 < x < \frac{-24}{35}. (\frac{-5}{6})$
=> $\frac{-125}{27} < x < \frac{4}{7}$
=>$ -4,6 < x < 0,57$
=> x ∈ { -4; -3;-2; -1; 0}
`(-5/3)^3<x<-24/35.-5/6`
`⇔(-125)/27<x<4/7`
`⇔-4,629<x<0,57`
`⇔x∈{ (-4); (-3);(-2); (-1); 0}`