Find x such that the matrix is equal to its own inverse.

[ M=left[ begin{matrix}7&x\-8&-7\end{matrix} right]] The aim of the article is to find the value of the variable $x$ within the given matrix for which it will be equal to its inverse matrix. Read moreDetermine if the columns of the matrix form a linearly independent set. Justify each answer.The basic concept behind this question is the […]