Given A = $\displaystyle {\left[\begin{array}{c} {1}\\{0}\\{4}\\{2}\end{array}\right]}$ and B = $\displaystyle {\left[\begin{array}{cccc} {6}&-{7}&-{1}&{8}\end{array}\right]}$ , find $\displaystyle {A}{B}$ and $\displaystyle {B}{A}$ .

Hint: To enter a matrix answer, it needs to be in the following format: [(elements of row 1 separated by commas), (elements of row 2 separated by commas), (elements of last row separated by commas)]

For example: C = $\displaystyle {\left[\begin{array}{ccc} {1}&{2}&{3}\\{4}&{5}&{6}\end{array}\right]}$ is entered as [(1, 2, 3,), (4, 5, 6)]

$\displaystyle {A}{B}=$