Question

( n - 2)⁶ = ( n - 2 )⁸

Answer 1

\(\left(n-2\right)^6=\left(n-2\right)^8\)

\(\Leftrightarrow\left(n-2\right)^6-\left(n-2\right)^8=0\)

\(\Leftrightarrow\left(n-2\right)^6\left[1-\left(n-2\right)^2\right]=0\)

\(\Leftrightarrow\left[\begin{array}{nghiempt}\left(n-2\right)^6=0\\1-\left(n-2\right)^2=0\end{array}\right.\)

\(\Leftrightarrow\left[\begin{array}{nghiempt}n-2=0\\n-2=1\end{array}\right.\)

\(\Leftrightarrow\left[\begin{array}{nghiempt}n=2\\n=1\end{array}\right.\)

 

 

Answer 2

n=2

 

Answer 3

n = 2 và n cx có thể = 3 bn nhé