Question

(x-2)^2=1

Answer 1

\(\left(x-2\right)^2=1\)

TH1 : x - 2 = 1 <=> x = 3

TH2 : x - 2 = -1 <=> x = 1 

Answer 2

Ta có: \(\left(X-2\right)^2=1\)

\(\Leftrightarrow\left[{}\begin{matrix}x-2=1\\x-2=-1\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=3\\x=1\end{matrix}\right.\)

Answer 3

(x-2)²=1²

=> \(\left[{}\begin{matrix}x-2=1\\x-2=-1\end{matrix}\right.\left[{}\begin{matrix}x=3\\x=1\end{matrix}\right.\)

Answer 4

(x - 2)² = 1

<=> (x - 2)² - 1 = 0

<=> (x - 2 - 1)(x - 2 + 1) = 0

<=> (x - 3)(x - 1) = 0

<=> \(\left[{}\begin{matrix}x-3=0\\x-1=0\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=3\\x=1\end{matrix}\right.\)