1 Answer

Amanda G · Answer 1 · 2021-09-28T20:50:29+0000

Answer:

Explanation:

if
$A=\left[\begin{array}{ccc}-5&6&-5\\6&3&9\\\end{array}\right]$ then

-4A=
$-4\left[\begin{array}{ccc}-5&6&-5\\6&3&9\\\end{array}\right]$

we multiply 4 by each number in the matrix the method is called scalar multiplication so our 4A matrix becomes

$-4A=\left[\begin{array}{ccc}20&-24&20\\-24&-12&-36\\\end{array}\right]$

Just the signs changed though in the solution. This is the correct answer didn't see the negative sign before my bad .

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