Question

x : 9 phần 14 = 7 phần 3 : x

 

Answer 1

\(\Leftrightarrow x^2=\dfrac{9}{14}\cdot\dfrac{7}{3}=\dfrac{63}{42}=\dfrac{3}{2}\)

hay \(x\in\left\{\dfrac{\sqrt{6}}{2};-\dfrac{\sqrt{6}}{2}\right\}\)

Answer 2

giúp mik với mik cần gấp

Answer 3

`x : 9/14 = 7/3 : x`

`=> x^2 = 9/14 xx 7/3`

`=> x^2 = 63/42`

`=> x = +-sqrt(63/42).`