Solved: If a matrix A is premultiplied by an elementary matrix E, the product EA will be
Chapter 8, Problem 39(choose chapter or problem)
In Problems 39 and 40, let A and B be \(n\ \times\ n\) matrices. Explain why, in general, the given formula is not valid.
\((A+B)^2=A^2+2AB+B^2\)
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