qual é o valor da matriz
![\left[\begin{array}{ccc}2&1&3\\-1&0&2\\\end{array}\right] . \left[\begin{array}{ccc}4&-2&-1\\3&4&5\\\end{array}\right]](https://tex.z-dn.net/?f=++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%26amp%3B1%26amp%3B3%5C%5C-1%26amp%3B0%26amp%3B2%5C%5C%5Cend%7Barray%7D%5Cright%5D+.+++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D4%26amp%3B-2%26amp%3B-1%5C%5C3%26amp%3B4%26amp%3B5%5C%5C%5Cend%7Barray%7D%5Cright%5D+ "\left[\begin{array}{ccc}2&1&3\\-1&0&2\\\end{array}\right] . \left[\begin{array}{ccc}4&-2&-1\\3&4&5\\\end{array}\right]")
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a resposta é 8 -2 3
3 0 10
3 0 10
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