Answer:
[tex]\left[\begin{array}{ccc}-6&10\\10&-10\end{array}\right][/tex]
Step-by-step explanation:
[tex]-2A=-2*\left[\begin{array}{ccc}3&-5\\-5&5\end{array}\right]=\left[\begin{array}{ccc}-6&10\\10&-10\end{array}\right][/tex]
