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Oi Andrielle :)
![\left[\begin{array}{ccc}-1&2\\3&1\\\end{array}\right] * \left[\begin{array}{ccc}2&-1\\4&3\\\end{array}\right]+\left[\begin{array}{ccc}2&-1\\4&3\\\end{array}\right]^t](https://tex.z-dn.net/?f=++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-1%26amp%3B2%5C%5C3%26amp%3B1%5C%5C%5Cend%7Barray%7D%5Cright%5D+%2A++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%26amp%3B-1%5C%5C4%26amp%3B3%5C%5C%5Cend%7Barray%7D%5Cright%5D%2B%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%26amp%3B-1%5C%5C4%26amp%3B3%5C%5C%5Cend%7Barray%7D%5Cright%5D%5Et "\left[\begin{array}{ccc}-1&2\\3&1\\\end{array}\right] * \left[\begin{array}{ccc}2&-1\\4&3\\\end{array}\right]+\left[\begin{array}{ccc}2&-1\\4&3\\\end{array}\right]^t")
![\left[\begin{array}{ccc}-1&2\\3&1\\\end{array}\right] * \left[\begin{array}{ccc}2&-1\\4&3\\\end{array}\right]+\left[\begin{array}{ccc}2&-1\\4&3\\\end{array}\right]^t \\ \\ \left[\begin{array}{ccc}-1*2+2*4&-1*(-1)+2*3\\3*2+1*4&3*(-1)+1*3\\\end{array}\right]+\left[\begin{array}{ccc}2&4\\-1&3\\\end{array}\right] \\ \\ \left[\begin{array}{ccc}6&7\\10&0\\\end{array}\right]+\left[\begin{array}{ccc}2&4\\-1&3\\\end{array}\right] \\ \\ <strong>\left[\begin{array}{ccc}8&11\\9&3\\\end{array}\right]</strong>](https://tex.z-dn.net/?f=++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-1%26amp%3B2%5C%5C3%26amp%3B1%5C%5C%5Cend%7Barray%7D%5Cright%5D+%2A++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%26amp%3B-1%5C%5C4%26amp%3B3%5C%5C%5Cend%7Barray%7D%5Cright%5D%2B%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%26amp%3B-1%5C%5C4%26amp%3B3%5C%5C%5Cend%7Barray%7D%5Cright%5D%5Et+%5C%5C++%5C%5C++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D-1%2A2%2B2%2A4%26amp%3B-1%2A%28-1%29%2B2%2A3%5C%5C3%2A2%2B1%2A4%26amp%3B3%2A%28-1%29%2B1%2A3%5C%5C%5Cend%7Barray%7D%5Cright%5D%2B%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%26amp%3B4%5C%5C-1%26amp%3B3%5C%5C%5Cend%7Barray%7D%5Cright%5D+%5C%5C++%5C%5C+%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D6%26amp%3B7%5C%5C10%26amp%3B0%5C%5C%5Cend%7Barray%7D%5Cright%5D%2B%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D2%26amp%3B4%5C%5C-1%26amp%3B3%5C%5C%5Cend%7Barray%7D%5Cright%5D+%5C%5C++%5C%5C+%3Cstrong%3E%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D8%26amp%3B11%5C%5C9%26amp%3B3%5C%5C%5Cend%7Barray%7D%5Cright%5D%3C%2Fstrong%3E "\left[\begin{array}{ccc}-1&2\\3&1\\\end{array}\right] * \left[\begin{array}{ccc}2&-1\\4&3\\\end{array}\right]+\left[\begin{array}{ccc}2&-1\\4&3\\\end{array}\right]^t \\ \\ \left[\begin{array}{ccc}-1*2+2*4&-1*(-1)+2*3\\3*2+1*4&3*(-1)+1*3\\\end{array}\right]+\left[\begin{array}{ccc}2&4\\-1&3\\\end{array}\right] \\ \\ \left[\begin{array}{ccc}6&7\\10&0\\\end{array}\right]+\left[\begin{array}{ccc}2&4\\-1&3\\\end{array}\right] \\ \\ <strong>\left[\begin{array}{ccc}8&11\\9&3\\\end{array}\right]</strong>")
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