Question

x² = 18/8 có hợp lí ko ạ

 

Answer 1

`x^2=18/8`

`=> x^2=9/4`

\(=>\left[{}\begin{matrix}x=\dfrac{3}{2}\\x=-\dfrac{3}{2}\end{matrix}\right.\)

Answer 2

\(x^2=\dfrac{18}{8}\)

\(\Rightarrow x=\sqrt{\dfrac{18}{8}}\)

\(\Rightarrow x=\dfrac{\sqrt{18}}{\sqrt{8}}\)

\(\Rightarrow x=\dfrac{3\sqrt{2}}{2\sqrt{2}}\)

\(\Rightarrow x=\dfrac{3}{2}\)

Answer 3

`x^2 =18/8`

`=> x^2= 9/4`

\(\Rightarrow\left[{}\begin{matrix}x=\dfrac{3}{2}\\x=-\dfrac{3}{2}\end{matrix}\right.\)

có một chút nhầm lẫn khi nãy ạ=')

Answer 4

\(x^2=\dfrac{18}{8}\\ =>x^2=\dfrac{9}{4}\\ =>\left[{}\begin{matrix}x=\dfrac{3}{2}\\x=-\dfrac{3}{2}\end{matrix}\right.\)

hợp lí nhé bn