Need help with matrices :/
6. Given that the matrix is skew-symmetric, find the value of x+y+z
[tex]B=\left[\begin{array}{ccc}0&-2x&-63\\z+14&0&3z\\-3y+6x&-12&0\end{array}\right][/tex]
7. Find the value of x which makes the matrix [tex]A=\left[\begin{array}{ccc}-1&5x-3\\-43&-8\end{array}\right][/tex] symmetric
8. If [tex]A=\left[\begin{array}{ccc}-6&-2y&-y-3x\\z+5&-9&z-6\\-9-2x&-11&-4\end{array}\right][/tex] is a symmetric matrix, what are the values of x, y, and z?
