Mohon bantuannya dijawab:( butuh skrg jawaban nya ni

Mohon bantuannya dijawab:( butuh skrg jawaban nya ni

Jawab:

$left[begin{array}{ccc}-2&7\-3&10end{array}right]$

Penjelasan dengan langkah-langkah:

A = $left[begin{array}{ccc}2&3\1&4end{array}right]$ & B = $left[begin{array}{ccc}4&1\3&1end{array}right]$

3A = 3 . $left[begin{array}{ccc}2&3\1&4end{array}right]$ = $left[begin{array}{ccc}3.2&3.3\3.1&3.4end{array}right]$ = $left[begin{array}{ccc}6&9\3&12end{array}right]$

2B = 2 . $left[begin{array}{ccc}4&1\3&1end{array}right]$ = $left[begin{array}{ccc}2.4&2.1\2.3&2.1end{array}right]$ = $left[begin{array}{ccc}8&2\6&2end{array}right]$

Maka,

3A – 2B = $left[begin{array}{ccc}6&9\3&12end{array}right] - left[begin{array}{ccc}8&2\6&2end{array}right] = left[begin{array}{ccc}6-8&9-2\3-6&12-2end{array}right] = left[begin{array}{ccc}-2&7\-3&10end{array}right]$

Semoga membantu dan semoga bermanfaat…