=> x2=9/14 x 7/3
=> x2=125/42
Còn x bằng bao nhiu thì mk cx ko bt sory nha ^-^
\(x:\frac{9}{14}=\frac{7}{3}:x\)
\(\Rightarrow x.x=\frac{7}{3}.\frac{9}{14}=\frac{63}{42}\)
\(\Rightarrow x^2=\frac{63}{42}\)
\(\Rightarrow x\in\left\{\sqrt{\frac{63}{42}};-\sqrt{\frac{63}{42}}\right\}\)
Vaayj \(x\in\left\{\sqrt{\frac{63}{42}};-\sqrt{\frac{63}{42}}\right\}\)
mk giaỉ có đúng ko vậy các bn