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Janusz
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How I Got a Perfect 90 in PTE Speaking | Complete Mock Test + Answers | VLE
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How I Got a Perfect 90 in PTE Speaking | Complete Mock Test + Answers | VLE
33K views
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How I Got a Perfect 90 in PTE Speaking | Complete Mock Test + Answers | VLE
![If A = [[2,-1],[3,2]] and B = [[0,4],[-1,7]] , find (3A^2 - 2B + I).](http://i.ytimg.com/vi/0DhveErBAHA/mqdefault.jpg "If A = [[2,-1],[3,2]] and B = [[0,4],[-1,7]] , find (3A^2 - 2B + I).")
