Answer:
Step-by-step explanation:
if [tex]A=\left[\begin{array}{ccc}-5&6&-5\\6&3&9\\\end{array}\right][/tex] then
-4A= [tex]-4\left[\begin{array}{ccc}-5&6&-5\\6&3&9\\\end{array}\right][/tex]
we multiply 4 by each number in the matrix the method is called scalar multiplication so our 4A matrix becomes
[tex]-4A=\left[\begin{array}{ccc}20&-24&20\\-24&-12&-36\\\end{array}\right][/tex]
Just the signs changed though in the solution. This is the correct answer didn't see the negative sign before my bad .
