Am I misinterpreting this matrix determinant property? I was reading matrix determinant properties from wikipedia.
The property reads
$\det(cA) = c^n \det(A)$ for $n \times n$ matrix.
However I am not able to realize it. What I find is $\det(cA) = c\det(A)$ 
For example, multiplying matrix by 2 and then taking the determinant of the resultant matrix:
$
2\begin{bmatrix}
4 & 5 & 6 \\
6 & 5 & 4 \\
4 & 6 & 5 \\
\end{bmatrix}=
\begin{bmatrix}
8 & 10 & 12 \\
6 & 5 & 4 \\
4 & 6 & 5
\end{bmatrix}
$
and
$
\begin{vmatrix}
8 & 10 & 12 \\
6 & 5 & 4 \\
4 & 6 & 5
\end{vmatrix}=60
$
Now first taking the determinant and then multiplying by 2 yields the same result:
$$
2\begin{vmatrix}
4 & 5 & 6 \\
6 & 5 & 4 \\
4 & 6 & 5 \\
\end{vmatrix}
= 2 \cdot 30 = 60
$$ 
Where I am mistaking?

$$2 \begin{bmatrix} 4 & 5 & 6 \\ 6 & 5 & 4 \\ 4 & 6 & 5 \end{bmatrix} =
\begin{bmatrix} 8 & 10 & 12 \\ 12 & 10 & 8 \\ 8 & 12 & 10 \end{bmatrix}.$$
You only multiplied the first row by 2.
