QuestionSimplify. $$-\frac{1}{4}\left[\begin{array}{ll} 12 & -20 \\ 28 & -12 \end{array}\right]$$

Studdy Solution
Simplify each element of the resulting matrix:
$\left[\begin{array}{cc} -\frac{12}{4} & \frac{20}{4} \\ -\frac{28}{4} & \frac{12}{4} \end{array}\right] = \left[\begin{array}{cc} -3 & 5 \\ -7 & 3 \end{array}\right]$
The simplified matrix is:
$\boxed{\left[\begin{array}{cc} -3 & 5 \\ -7 & 3 \end{array}\right]}$