Question: Suppose that A,B,C,D, and E are matrices with the following sizes: Determine whether the matrix expression E(8B+A) is defined. Enter the size of the resulting

Suppose that A,B,C,D, and E are matrices with the following sizes:

Suppose that A,B,C,D, and E are matrices with the following sizes: Determine whether the matrix expression E(8B+A) is defined. Enter the size of the resulting matrix (enter 'NA' in each box if undefined). E(8B+A) is a ( )

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