Question

( x + 1/3 )^2 = 1/25

Answer 1

=>x+1/3=1/5 hoặc x+1/3=-1/5

=>x=-2/15 hoặc x=-8/15

Answer 2

`(x+1/3)^2 = 1/25`

`=>(x+1/3)^2 = (1/5)^2`

`=>` \(\left[{}\begin{matrix}x+\dfrac{1}{3}=\dfrac{1}{5}\\x+\dfrac{1}{3}=-\dfrac{1}{5}\end{matrix}\right.\)

`=>` \(\left[{}\begin{matrix}x=\dfrac{1}{5}-\dfrac{1}{3}\\x=-\dfrac{1}{5}-\dfrac{1}{3}\end{matrix}\right.\)

`=>` \(\left[{}\begin{matrix}x=-\dfrac{2}{15}\\x=-\dfrac{8}{15}\end{matrix}\right.\)

Vậy....

Answer 3

\(\left(x+\dfrac{1}{3}\right)^2=\left(\dfrac{1}{5}\right)^2\) 

\(x+\dfrac{1}{3}=\pm\dfrac{1}{5}\) 

=> x + 1/3 = 1/5

x = 1/5 - 1/3 = -2/15

=> x + 1/3 = -1/5

x = -1/5 - 1/3 = -8/15

Vậy ...

Answer 4

( x + 1/3 )^2 = 1/25

 TH1:

  x + 1/3       = 1/5

  x                = -2/15

TH2:

  x + 1/3       = -1/5

  x                = -8/15

 

Answer 5

\(\Rightarrow\left(x+\dfrac{1}{3}\right)^2=\left(\pm\dfrac{1}{5}\right)^2\)

\(\left[{}\begin{matrix}x+\dfrac{1}{3}=\dfrac{1}{5}\\x+\dfrac{1}{3}=-\dfrac{1}{5}\end{matrix}\right.\)

\(\left[{}\begin{matrix}x=\dfrac{1}{5}-\dfrac{1}{3}\\x=-\dfrac{1}{5}-\dfrac{1}{3}\end{matrix}\right.\)

\(\left[{}\begin{matrix}x=\dfrac{-2}{15}\\x=\dfrac{-8}{15}\end{matrix}\right.\)

\(Vậy\) \(x=\dfrac{-2}{15}\) \(và\) \(x=\dfrac{-8}{15}\)