Question

(x-1)mu 2=25

Answer 1

(x - 1)² = 25

=> (x - 1)² = 5²

=> x - 1 = 5

=> x = 6

Answer 2

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

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

\(\Rightarrow x-1=5\) hoặc x-1=(-5)

x=5+1 x=(-5)+1

x=6 x=(-4)

Vậy x=6 hoặc x=(-4)

Answer 3

( x - 1 )² = 25

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

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