![\left[\begin{array}{ccc}0&-2\\4&-12\\\end{array}\right]](/tpl/images/0702/2153/d0fc8.png)
![\left[\begin{array}{ccc}0(-1)+2(0)&0(3)+2(-1)\\-4(-1)+0(0)&-4(3)+0(-1)\\\end{array}\right]](/tpl/images/0702/2153/f2f06.png)
![\left[\begin{array}{ccc}0+0&0-2\\4+0&-12+0\\\end{array}\right]](/tpl/images/0702/2153/24a50.png)
Pls explain this, I don't understand
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Answers: 3
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