Question

(x-1)mu 2=25

Answer 1

Ta có :

\(\left(x-1\right)^2=25\)

\(\Rightarrow\left[\begin{array}{nghiempt}x-1=5\\x-1=-5\end{array}\right.\)

\(\Rightarrow\left[\begin{array}{nghiempt}x=6\\x=-4\end{array}\right.\)

Vậy x = 6 ; x = - 4

Answer 2

Ta có: \(\left(x-1\right)^2=25\)

\(\Rightarrow\left(x-1\right)^2=5^2\)

\(\Rightarrow x-1=5\)

\(\Rightarrow x=6\)

Vậy: \(x=6\)

Chúc bạn hok tốt

Answer 3

Ta có: (x - 1)² = 25

<=> \(\left[\begin{array}{nghiempt}x-1=5\\x-1=-5\end{array}\right.\)

<=> \(\left[\begin{array}{nghiempt}x=6\\x=-4\end{array}\right.\)