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![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).")
![Find the value of a, if [[a-b,2a+c],[2a+b,3c+d]] = [[-1,5],[0,13]]](http://i.ytimg.com/vi/jeCnaP3haUk/mqdefault.jpg "Find the value of a, if [[a-b,2a+c],[2a+b,3c+d]] = [[-1,5],[0,13]]")