dadas as matrizes A=[2 3 5 1] B=[3 1 2 1] determineA²,em que A²=A.AB²,em queB²=B.B[A+B].[A-B]A²-B²
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A![A^{2} = \left[\begin{array}{ccc}19&9\\22&16\\\end{array}\right]](https://tex.z-dn.net/?f=+A%5E%7B2%7D+%3D++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D19%26amp%3B9%5C%5C22%26amp%3B16%5C%5C%5Cend%7Barray%7D%5Cright%5D+ "A^{2} = \left[\begin{array}{ccc}19&9\\22&16\\\end{array}\right]")
![B^{2} \left[\begin{array}{ccc}11&4\\8&3\\\end{array}\right]](https://tex.z-dn.net/?f=+B%5E%7B2%7D+++%5Cleft%5B%5Cbegin%7Barray%7D%7Bccc%7D11%26amp%3B4%5C%5C8%26amp%3B3%5C%5C%5Cend%7Barray%7D%5Cright%5D+ "B^{2} \left[\begin{array}{ccc}11&4\\8&3\\\end{array}\right]")
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